The Ice Legion

Eminence - {p/w}{p/u}{p/b}{p/r}{p/g}, Put a Dragon card from your hand facedown As a 0/10 Ice Egg with "When this creature dies, you may play this card faceup without paying its mana cost.".
Flying, Indestructible, vigilance. The Ice Legion can't become tapped and can't block.
When this card attacks it deals X damage to a creature you control and you gain X life where X is this creature's power.