Escape From Guiliad

Ward (Discard a random card) & Limbo
{x}{t} Give control of target Aberration to another player of your choice. On each of their turns that player must pay {x} or X life
in any combination to keep control of it. If they don't the owner regains control of the Aberration. Any player who does not pay its upkeep cost Mills X. (X is always equal to the Aberration's converted mana cost)