Alcadizaar, The Conqueror

Menace, Lifelink

The Cure Of Khsar - Alcadizaar, The Conqueror
gains Deathtouch, Indestructible and First Strike
when fighting against Undead, Zombie, Skeleton,
Vampire, or Demon Creatures.

If Alcadizaar, The Conqueror would leave the Battlefield, you can Sacrifice a Skeleton Creature
instead.