Hey, Buugi, are you by any chance familiar with
this? I'd say it's a damned sight better than the regular Half Dragon template.

I don't know if it'll be of use for Anaesthesia or not, but I thought I'd throw it out there.
Also, I don't think I can do this Phane. I just hate the way they're designed in the ELH so much. I have my own version I did for the IH rules, but it's unfortunately too high-level to make a very effective warlock out of. (I have it as ECL 72, but it's probably a bit higher than that in practice).
In case you want to see it, here it is.
[sblock]
Immortal Phane
Large Outsider (Abomination, Chaotic, Evil, Extra-Planar, Incorporeal)
Hit Dice: 72d20 +792 +360 (2,592 hp)
Initiative: +57 (+49 Dexterity, +8 Superior Initiative)
Speed: 80 ft., Fly 240 ft. (Perfect)
Armor Class: 121 (-1 Size, +34 Deflection, +49 Dexterity, +4 Divine, +7 Dodge, +18 Insight)
Flat-Footed: 65
Touch: 121
Base Attack/Grapple: +72/--
Space/Reach: 10 ft./10 ft.
Attack: Incorporeal Touch +146 144d8 Chronal Cold + Stasis Touch (DC 71)
Special Abilities: Chronal Blast, Spell-Like Abilities, Stasis Touch, Time Leach
Special Qualities: Abomination Traits, Chronal Displacement, DR 70/Epic and Lawful, Fast Healing 70, Legendary Dexterity, Null Time Field, Quickness, Regeneration 35, Resonating Touch, Sonic Immunity, Slipstream, Telepathy, Temporal Insight, Time Regression, SR 86
Saves: Fort +75 Ref +121 Will +81
Abilities: Str 0 Dex 108 Con 36 Int 32 Wis 46 Cha 70
Skills: Balance +121, Bluff +105, Concentration +88, Diplomacy +105, Hide +121, Intimidate +105, Jump +75, Knowledge (Arcana, Religion, Nature, the Planes) +86, Listen +93, Move Silently +121, Search +86, Sense Motive +93, Spell-Craft +86, Spot +93, Swim +75, Tumble +105
Feats: Alertness, Combat Expertise, Combat Reflexes, Dodge, Improved Initiative, Improved Natural Attack (Incorporeal Touch), Lighting Reflexes, Mobility, Spring Attack, Weapon Focus (Incorporeal Touch)
Epic Feats: Combat Mastery, Epic Reflexes, Epic Weapon Focus (Incorporeal Touch), Fire Baptism, Improved Combat Expertise, Improved Dodge, Improved Toughness (5), Sixth Sense, Superior Initiative, Supreme Dodge, Timely Dodge
Alignment: Chaotic Evil
Environment: Space, Time Distortions
ECL: 72
CR: 48
Combat
Phanes are horrific opponents, making use of all their terrifying temporal abilities to overwhelm opponents.
Chronal Blast
As a Standard Action, the Phane may make a Ranged Touch Attack with a range of 820 ft. The target takes 1d12 damage per their Hit Dice, i.e., if the Phane hit a 70th level fighter with this ability, he would take 70d12 damage.
Chronal Displacement
A Phane constantly shifts between time streams, making it difficult to affect with any ability. It has a 50% chance of ignoring any physical effect. (This stacks with its Incorporeal traits to provide a 62.5% miss chance.)
Immunities
Phanes are immune to Ability Damage, Ability Drain, Death by Massive Damage, Energy Drain, Sonic Damage, and Spells from the Enchantment, Illusion, and Transmutation schools.
Null Time Field
A Phane is surrounded by a Null Time Field with a radius of 820 ft. Any opponent within the Null Time Field must make a Will Save (DC 62) each round or be unable to act, frozen in time. Those making their save are still treated as Slowed while within the Null Time Field.
Quickness
Phanes are preternaturally fast and are always treated as Hasted.
Resonating Touch
The damage of a Phane’s Incorporeal Touch Attack doubles every time it used against the same opponent consecutively. (Two doublings equals a tripling.)
Slipstream
Phanes are utterly unfettered by time. They are immune to temporal and aging effects, cannot be undermined by time travel, and join in any Time Stop cast within 820 ft.
Spell-Like Abilities
Caster Level 90th DC 62 + Spell Level
Always Active: Detect Good, Detect Magic, Greater Invisibility, Tongues, Unholy Aura
At Will: Greater Teleport, Quickened Slow, Trap the Soul, True Strike, Time Stop
4/day: Safe Time, Time Duplicate
Telepathy
A Phane may communicate telepathically with any creature within 1,000 ft. that has a language.
Temporal Insight
Phanes receive an Insight Bonus on Armor Class, Attack Rolls, Caster Level, Saving Throws, and Save DCs equal to their Wisdom Modifier.
Time Leach
Once a Phane has sealed an opponent in Temporal Stasis, it begins to leach away its time. For every round an opponent remains removed from the time stream, they gain 1 Negative Level. This is not caused by Negative Energy and ignores immunity to Energy Drain. These Negative Levels persist for 1 day per round spent in Temporal Stasis and can only be recovered by a Miracle or Wish spell.
Time Regression
A Phane may replay 4 rounds of combat per day, in which all its opponents act in the exact same manner and it may change its actions freely.[/sblock]
Amusingly, it's at-will Time Stop SLA is of almost no value to it.
Anyway, as cool as it sounds, finding a plausible motivation for a Phane warlock to want to fight in the tournament rather than just want to eat everyone seems like it would be difficult.
