Kurio, Bed Creeper

When Kurio, Bed Creeper enters the battlefield place X 1/1 colorless creature tokens named Bed Creeper onto the battlefield, where X is the amount of mana spent to cast Kurio, Bed Creeper.
{w}{b}{r}{t}: you may sacrifice any number of creatures named Bed Creeper, if you do deal X damage to target creature, where X is the number of creatures sacrificed this way.