Vault 87: Forced Evolution

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Gain control of target non-Mutant creature for as long as you control this Saga. II — Put a +1/+1 counter on target creature you control. It becomes a Mutant in addition to its other types. III — Draw cards equal to the greatest power among Mutants you control.