Yungir, The Forgotten God

This card costs X less, where x is the amount of damage you have taken this game.
Whenever a creature enters the battlefeild, search your library for a creature with the same converted mana cost and put it on the battlefeild.
{10}{t}, Creatures you control gain Hexproof and Indestructible until end of turn. This ability cost 1 less for each damage you have taken this turn.