Sito'alec, Dimension Scluptor

Haste, indestructible, protection from instants and sorceries, leach (When this creature enters the battlefield, you may sacrifice a creature, if you do X becomes that creatures converted mana cost.)
When Sito'alec, Dimension Scluptor enters the battlefield, gain control of X target permanents until the end of turn.
Pay X Life: Gain control of target permanent until the end of turn.