Elixir

{g/u}{b},{t}: Target Creature Becomes a Mutant
in addition to its other types.
If you control a Mutant named, Egg, Elixir,
Hope Summers, Proteus and Tempus,
Mutants you control have Persist(When this
creature dies, if it had no -1/-1 counters on it,
return it to the battlefield under its owner's
control with a -1/-1 counter on it.)