Sidequest: Hunt the Mark // Yiazmat, Ultimate Mark

Oracle Text

[Sidequest: Hunt the Mark]
When this enchantment enters, destroy up to one target creature.
At the beginning of your end step, if a creature died under an opponent's control this turn, create a Treasure token. Then if you control three or more Treasures, transform this enchantment.

[Yiazmat, Ultimate Mark]
{1}{B}, Sacrifice another creature or artifact: Yiazmat gains indestructible until end of turn. Tap it.