Unengalid Dromaeosaurs or "Speedy Maniraptors"
Unengalid Maniraptors ("Speedy Raptors")
The Unenlagiinae are a subfamily of Dromaeosaurs characterised by its particularly short arms, slim jaws and birdlike features. For the sake of this conversion we're assuming these are particularly swift animals that chase down their victims, but they aren't as well suited to tackling large prey - comparable to cheetahs instead of regular big cats.
Most known Unenlagids were modest sized animals between 4 and 7 feet long (Small or Very Small in size), but one genus, Austroraptor reached an impressive 16 feet or so from nose to tail (a "Big Maniraptor" under the current scheme).
Creating an Unengalid
To create an Unengalid, take a standard Maniraptor and reduce its bite attack's damage by one stage and its foreclaw attacks' damage by two stages (e.g. a Medium-sized Unengalid would have a 1d6 bite damage like a Little Dromaeosaurus and 1d3 foreclaw damage of a Small Velociraptor).
Replace the standard Maniraptor's Multiattack feat with the Run feat.
If the base maniraptor has Weapon Focus or Improved Natural Attack with its foreclaws, change this to Weapon Focus (bite) or Improved Natural Attack (bite).
Remove the standard Raptor's racial bonus to grapple checks. An Unengalid's lighter jaws and small arms make it less well suited for wrestling with prey.
Remove the standard Raptor's Pounce special attack.
Add the Trip special attack:
Trip (Ex): An Unengalid maniraptor that hits with a foreclaw or bite attack can attempt to trip the opponent as a free action without making a touch attack or provoking an attack of opportunity. If the attempt fails, the opponent cannot react to trip the 'raptor.
Finally, reduce the base Maniraptor's Challenge Rating to that of the next smallest stage (e.g. a Very Small Unengalid is CR 1/3 like a Tiny Bambiraptor), down to CR 1/6 for a Diminutive Unengalid. Unengalids lack of Pounce, Multiattack and weaker attacks make Unengalids much less effective combatants.
Big Unengalid (Austroraptor)
Late Cretaceous (70 MYA)
Medium Animal
Hit Dice: 6d8+18 (45 hp)
Initiative: +3
Speed: 60 ft. (12 squares)
Armor Class: 16 (+3 Dex, +3 natural), touch 13, flat-footed 13
Base Attack/Grapple: +4/+8
Attack: Bite +9 melee (1d8+4)
Full Attack: Bite +9 melee (1d8+4) and 2 foreclaws +3 melee (1d3+2) and talons +3 melee (1d10+2)
Space/Reach: 5 ft./5 ft.
Special Attacks: Improved grab, talon-stab [+8 melee 2d8+6], trip
Special Qualities: Low-light vision, scent
Saves: Fort +8, Ref +8, Will +4
Abilities: Str 19, Dex 17, Con 16, Int 2, Wis 15, Cha 10
Skills: Balance +11, Climb +8, Hide +12* [+16 in undergrowth], Jump +20, Listen +8, Move Silently +9, Spot +8, Survival +7
Feats: Run, Skill Focus (Hide), Track (B), Weapon Focus (bite)
Environment: Warm forests or plains
Organization: Solitary, pair, or pack (3–6)
Challenge Rating: 3
Treasure: None
Alignment: Always neutral
Advancement: 7 HD (Medium); 8-9 HD (Large)
Level Adjustment: —
A lean birdlike animal that stands as tall as a large human on its back legs, with a long, stiff tail and short arms. Its hooked claws and sharp teeth mark it as a predator. The beast's entire body is covered in feather-like bristles in tan, yellow and white stripes, patterned to blend in with the tall prairie grass.
Unengalids are lean Dromaeosaurs with small arms and light jaws. While regular Dromaeosaurs are ambush predators who will attack prey several times their own size, the swift running Unengalids specialise in chasing down prey smaller than themselves.
Unengalids are mostly solitary hunters, although they do socialize in small family groups. They have a relatively large brain for a dinosaur, and sometimes learn to hunt in cooperative packs in areas where there is a shortage of the smaller prey animals they prefer.
The above stats represent Austroraptor, the largest known Unengalid. This lion-sized dinosaur is the only Unengalid big enough to consider Medium-sized creatures (such as most adventurers) as potential victims. Lesser Unengalids only pose a threat to pets, gnomes and livestock.
A typical Austroraptor has a total length of 16 feet and stands 6 feet tall, with a weight of 300 pounds.
Combat
An Austroraptor tries to grapple prey and stab them with its rear talons as it claws and bites. The talons count as one attack. If its intended victim flees or puts up a fight, the dinosaur uses its Trip attack to try to put them in a disadvantageous position.
Note that an Unengalid can use either Improved Grab or Trip when it hits with a foreclaw or bite attack, but not both with the same attack. It can Trip and Grab in the same round if it hits with two or more foreclaw and bite attacks.
Austroraptors are not as vicious as most big Dromaeosaurs, and will often retreat if their chosen victims make a stand instead of fleeing.
Improved Grab (Ex): To use this ability, an Austroraptor must hit an opponent of any size with a bite or foreclaw attack. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If it wins the grapple check, it establishes a hold and can Talon-Stab.
Talon-Stab (Ex): When an Austroraptor makes a full attack against a foe it is grappling with, its talons attack at +8 melee for 2d8+6 damage.
Trip (Ex): An Austroraptor that hits with a foreclaw or bite attack can attempt to trip the opponent (+6 check modifier) as a free action without making a touch attack or provoking an attack of opportunity. If the attempt fails, the opponent cannot react to trip the 'raptor.
Skills
An Austroraptor has a +8 racial bonus on Balance and a +4 racial bonus on Climb, Hide, Jump, Listen, Move Silently, Spot, and Survival checks. An Austroraptor can use either its Strength or its Dexterity bonus on Climb and Jump checks.
*Its racial bonus to Hide increases to +8 in undergrowth.
Different Sizes of Unengalids
Here are stat blocks for the smaller varieties of Unengalid Dromaeosaurs, plus a block for an Austroraptor advanced to Large size. These animals are too small to willingly attack Medium sized opponents such as adventurers, unless driven to by desperation or duress.
Large Unengalid (Advanced Austroraptor) (Large Animal, Hit Dice: 8d8+32 (68 hp); Init: +3; Speed: 60 ft. (12 squares); AC: 17 (–1 size, +3 Dex, +5 natural), touch 12, flat-footed 14; Base Attack/Grapple: +6/+16; Attack: Bite +12 melee (2d4+6); Full Attack: Bite +12 melee (2d4+6) and 2 foreclaws +6 melee (1d4+3) and talons +6 melee (2d6+3); Space/Reach: 10 ft./5 ft.; Special Attacks: Improved grab, talon-stab [+11 melee 3d6+9], trip [+10]; Special Qualities: Low-light vision, scent; Saves: Fort +10, Ref +9, Will +4; Abilities: Str 23, Dex 15, Con 18, Int 2, Wis 15, Cha 10; Skills:Balance +11, Climb +10, Hide +10* [+14 in undergrowth], Jump +22, Listen +8, Move Silently +10, Spot +8, Survival +7; Feats: Run, Skill Focus (Hide), Track (B), Weapon Focus (bite); CR: 4)
Big Unengalid (Austroraptor) (Medium Animal, Hit Dice: 6d8+18 (45 hp); Init: +3; Speed: 60 ft. (12 squares); AC: 16 (+3 Dex, +3 natural), touch 13, flat-footed 13; Base Attack/Grapple: +4/+8; Attack: Bite +9 melee (1d8+4); Full Attack: Bite +9 melee (1d8+4) and 2 foreclaws +3 melee (1d3+2) and talons +3 melee (1d10+2); Space/Reach: 5 ft./5 ft.; Special Attacks: Improved grab, talon-stab [+8 melee 2d8+6], trip [+4]; Special Qualities: Low-light vision, scent; Saves: Fort +8, Ref +8, Will +4; Abilities: Str 19, Dex 17, Con 16, Int 2, Wis 15, Cha 10; Skills: Balance +11, Climb +8, Hide +12* [+16 in undergrowth], Jump +20, Listen +8, Move Silently +9, Spot +8, Survival +7; Feats: Run, Skill Focus (Hide), Track (B), Weapon Focus (bite); CR: 3)
Medium Unengalid (Medium Animal, Hit Dice: 4d8+8 (26 hp); Init: +3; Speed: 60 ft. (12 squares); AC: 16 (+3 Dex, +3 natural), touch 13, flat-footed 13; Base Attack/Grapple: +3/+5; Attack: Bite +7 melee (1d6+2); Full Attack: Bite +7 melee (1d6+2) and 2 foreclaws +1 melee (1d3+1) and talons +1 melee (1d8+1); Space/Reach: 5 ft./5 ft.; Special Attacks: Improved grab, talon-stab [+6 melee 2d6+3], trip [+2]; Special Qualities: Low-light vision, scent; Saves: Fort +6, Ref +7, Will +3; Abilities: Str 15, Dex 17, Con 14, Int 2, Wis 15, Cha 10; Skills: Balance +11, Climb +7, Hide +8* [+12 in undergrowth], Jump +19, Listen +8, Move Silently +8, Spot +8, Survival +7; Feats: Run, Track (B), Weapon Finesse (B), Weapon Focus (bite); CR: 2)
Little Unengalid (Small Animal, Hit Dice: 3d8+3 (16 hp); Init: +3; Speed: 60 ft. (12 squares); AC: 16 (+1 size, +3 Dex, +2 natural), touch 14, flat-footed 13; Base Attack/Grapple: +2/–1; Attack: Bite +7 melee (1d6+1); Full Attack: Bite +7 melee (1d6+1) and 2 foreclaws +1 melee (1d2) and talons +1 melee (1d6); Space/Reach: 5 ft./5 ft.; Special Attacks: Improved grab, talon-stab [+6 melee 1d8+1], trip [–3]; Special Qualities: Low-light vision, scent; Saves: Fort +4, Ref +6, Will +3; Abilities: Str 13, Dex 17, Con 12, Int 2, Wis 15, Cha 10; Skills: Balance +11, Climb +7, Hide +11* [+15 in undergrowth], Jump +19, Listen +8, Move Silently +8, Spot +8, Survival +7; Feats: Run, Track (B), Weapon Finesse (B), Weapon Focus (bite); CR: 1)
Small Unengalid (Small Animal, Hit Dice: 2d8+2 (11 hp); Init: +3; Speed: 60 ft. (12 squares); AC: 16 (+1 size, +3 Dex, +2 natural), touch 14, flat-footed 13; Base Attack/Grapple: +1/–3; Attack: Bite +5 melee (1d4); Full Attack: Bite +5 melee (1d4) and 2 foreclaws +0 melee (1d2) and talons +0 melee (1d6); Space/Reach: 5 ft./5 ft.; Special Attacks: Improved grab, talon-stab [+5 melee 1d8], trip [-4]; Special Qualities: Low-light vision, scent; Saves: Fort +4, Ref +6, Will +2; Abilities: Str 11, Dex 17, Con 12, Int 2, Wis 15, Cha 10; Skills: Balance +11, Climb +7, Hide +11* [+15 in undergrowth], Jump +19, Listen +8, Move Silently +7, Spot +8, Survival +6; Feats: Run, Track (B), Weapon Finesse (B); CR: 1/2)
Very Small Unengalid (Tiny Animal, Hit Dice: 1d8 (4 hp); Init: +4; Speed: 50 ft. (10 squares); AC: 16 (+2 size, +4 Dex), touch 16, flat-footed 12; Base Attack/Grapple: +0/–9; Attack: Bite +6 melee (1d4-1); Full Attack: Bite +6 melee (1d4-1) and 2 foreclaws +1 melee (1) and talons +1 melee (1d4-1); Space/Reach: 2½ ft./0 ft.; Special Attacks: Improved grab, talon-stab [+6 melee 1d6-1], trip [–9]; Special Qualities: Low-light vision, scent; Saves: Fort +2, Ref +6, Will +2; Abilities: Str 8, Dex 19, Con 11, Int 2, Wis 15, Cha 10; Skills: Balance +11, Climb +8, Hide +16* [+20 in undergrowth], Jump +16, Listen +8, Move Silently +8, Spot +8, Survival +6; Feats: Run, Track (B), Weapon Finesse (B); CR: 1/3)
Tiny Unengalid (Tiny Animal, Hit Dice: ½d8 (2 hp); Init: +4; Speed: 50 ft. (10 squares); AC: 16 (+2 size, +4 Dex), touch 16, flat-footed 12; Base Attack/Grapple: +0/–10; Attack: Bite +6 melee (1); Full Attack: Bite +6 melee (1) and 2 foreclaws +1 melee (1) and talons +1 melee (1d4-3); Space/Reach: 2½ ft./0 ft.; Special Attacks: Improved grab, talon-stab [+6 melee 1d6-3], trip [-11]; Special Qualities: Low-light vision, scent; Saves: Fort +2, Ref +6, Will +2; Abilities: Str 5, Dex 19, Con 10, Int 2, Wis 15, Cha 10; Skills: Balance +11, Climb +8, Hide +16* [+20 in undergrowth], Jump +16, Listen +8, Move Silently +8, Spot +8, Survival +6; Feats: Run, Track (B), Weapon Finesse (B); CR: 1/4)
Diminutive Unengalid (Diminutive Animal, Hit Dice: ¼d8 (1 hp); Init: +4; Speed: 50 ft. (10 squares); AC: 18 (+4 size, +4 Dex), touch 18, flat-footed 14; Base Attack/Grapple: +0/–15; Attack: Bite +8 melee (1); Full Attack: Bite +8 melee (1) and foreclaws +3 melee (1) and talons +3 melee (1d3-4); Space/Reach: 1 ft./0 ft.; Special Attacks: Improved grab, talon-stab [+8 melee 1d4-4], trip [-16]; Special Qualities: Low-light vision, scent; Saves: Fort +2, Ref +6, Will +2; Abilities: Str 3, Dex 19, Con 10, Int 2, Wis 15, Cha 10; Skills: Balance +11, Climb +8, Hide +20* [+24 in undergrowth], Jump +16, Listen +8, Move Silently +8, Spot +8, Survival +6; Feats: Run, Track (B), Weapon Finesse (B); CR: 1/6)