Soul Multiplicity

Select {x} creatures to sacrifice into a Soul Token. X is the amount of added mana.

Body Repel {2}, {t}: Sacrifice 2 Soul Tokens, then deal 3 damage to target creature. If Body Repel doesn't destroy the target creature, it gains 2 stun counters.

Polymorphic Soul Isomer {3}, {t}: Sacrifice 3 Soul Tokens and make a 4/4 Black Polymorphic Soul Isomer soul creature with Haste. Its power and toughness decreases after every endstep.