Well I ran the encounter last night, so here is a brief update.
The set up was that they had been hired by "The Dark Lanterns" to go to the princes birthday party and thwart the princes assasin. Basically undercover agents trying to find the assassin before he finds the prince.
So, one of the players meets a girl that he saved when he was a teen at the party and started chatting with her and the prince. It was his job to stay close to the prince. While the others tried to root out the assassin. One of the players just manages to shout "CROSSBOW!" and then the encounter started with a Kill Shot. The player by the prince acts as a human shield and throws the baroness and prince to the ground taking the bolt to the back.
There were several WTF moments as the assassin leaped from the balcony, tossing daggers and slowing the defender, grabbing a chandeler swinging and focusing his deadly attacks on the controller.
See the assassin had actually been hired to kill them, and in the process ruin the princes party. So he had prior knowledge of what each of them was capable of.
My players like to whine a lot when I'm kicking their asses, so lets just say they did a lot of whining.
Phase 1 played out like I thought it would, my highly mobile enemy danced around the battlefield spreading the damage and poison around. Due to some really bad luck and really good luck on the players part Phase 1 didn't last long but I did punish them enough.
I allowed the players to use one healing surge and regain an encounter power between Phase 1 and Phase 2.
I didn't get a good feel of his abilities during phase 2 and 3 as my players critted him 4 times . In phase 3 he was critted 3 times in a row by three different players. I suppose that makes up for the fact that the warlord failed his poison save 3 times.
I managed to seriously injure 4 of the characters, the defender however was mostly untouched.
So, all in all, the level 10 Solo Boss Monster against my level 7 group was a solid fun encounter. Next time I'd definately add in more atmospheric and terrain elements, but I was literally prepping right up till game time last night.
I am glad it worked out but I am shocked
I thought it was a Level 10 Solo against a group of Level 10 players but this was again Level 7 players?? WTH?
I can not see how they survived at all... Considering this guy was allowed to attack 4 times per turn and was doing Ongoing Poison each time...
I built a PC quickly to see how he would take vs your guy.
CB Stats
[sblock]====== Created Using Wizards of the Coast D&D Character Builder ======
Thoradin, level 7
Dwarf, Fighter
Build: Great Weapon Fighter
Fighter: Combat Agility
Fighter Talents: Two-handed Weapon Talent
Background: Dwarf - Outcast
FINAL ABILITY SCORES
Str 21, Con 17, Dex 10, Int 10, Wis 11, Cha 8.
STARTING ABILITY SCORES
Str 18, Con 14, Dex 10, Int 10, Wis 11, Cha 8.
AC: 23 Fort: 22 Reflex: 15 Will: 15
HP: 73 Surges: 12 Surge Value: 18
TRAINED SKILLS
Intimidate +7, Endurance +13, Athletics +13
UNTRAINED SKILLS
Acrobatics +3, Arcana +3, Bluff +2, Diplomacy +2, Dungeoneering +5, Heal +3, History +3, Insight +3, Nature +3, Perception +3, Religion +3, Stealth +3, Streetwise +2, Thievery +3
FEATS
Level 1: Weapon Expertise (Heavy Blade)
Level 2: Weapon Focus (Heavy Blade)
Level 4: Toughness
Level 6: Armor Proficiency: Plate
POWERS
Fighter at-will 1: Cleave
Fighter at-will 1: Reaping Strike
Fighter encounter 1: Spinning Sweep
Fighter daily 1: Brute Strike
Fighter utility 2: Boundless Endurance
Fighter encounter 3: Dance of Steel
Fighter daily 5: Dizzying Blow
Fighter utility 6: Battle Awareness
Fighter encounter 7: Griffon's Wrath
ITEMS
Victory Flash Greatsword +2, Razor Drakescale Armor +2, Amulet of Protection +2
====== Copy to Clipboard and Press the Import Button on the Summary Tab ======
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Firstly he rolls initiative and gets 9, your guy beats him without even rolling.
So firstly your guy takes his first turn.
He uses his Encounter Power : 3d10 + 7 and 20 ongoing poison
Gets a 19 + 15 and hits
Thats 23 damage taking my Fighter down to 50hp
Next he uses his Slice & Dice and uses one of his Gouge attacks against my Fighter
Rolls a 9 + 15 = 24 and hits
That is 2d4 + 1 (6 damage) and my guy is down to 44hp
Next he uses his normal gouge attack
Rolls a 13 + 15 = 28 and hits
That is 2d4 + 1 (6 damage again) and my guy is down to 38hp
Next he uses he takes his first Action Point to shift 4 squares away using his Tumble and now he uses his Minor Bullseye attack
Rolls a 15 + 15 = 30 and hits
2d4 + 1 (and slowed) (7 damage) and my guy is down to 31hp
Next he takes his 2nd turn
Here he uses his Minor first
Rolls a 6 + 15 = 21 and misses
He gets miffed that he missed and uses his 2nd action point
Rolls a 14 + 15 = 29 and hits
2d4 + 1 (and slowed) (6 damage) and my guy is down to 25hp
Next he uses his slice and dice as he moves closer again
Rolls a 15 + 15 = 30 and hits
That is 2d4 + 1 (5 damage) and my guy is down to 20hp
Then he uses his Gouge attack again
That is 2d4 + 1 (3 damage again) and my guy is down to 17hp
... oh and unless he gets someone to grant him a Save or throw some healing surges at him, he is going to be dying next turn.
I also tried to have my guy hit yours...
First round he uses his Daily : Brute Strike
Rolls a 8 + 15 = 23 and misses
He uses his Action Point and tries it again
Rolls a 12 + 15 = 27 and hits, doing 34 damage (barely 5% of his HP and that was with a Daily and an Action Point)
.. I did this just for fun but I was just quite surprised that you would pit a 10th lvl solo against a 7th lvl party. Of course I had him unleash everything at one player to begin with and he would appear much weaker after that but to that one player, without a save or a heal - he is dying!
That being said, I am glad your encounter worked out well - I would be fearful if you were my DM for the threat of a TPK each session!! but no doubt would have been lots of fun.