Nikos, the Unifier

Lifesteal - Units and spells with Lifesteal give you health when they deal damage, healing you equal to the damage dealt.

Summon - Does something when played

Shift - When played, you may instead pay the Shift cost. Shifted units can't attack, block, or be selected until they emerge.

Emerge - After three turns, Shifted units emerge and get Unblockable that turn.