Squirrelly Tufferson

Creature spells in your graveyard have
"{b/g}{b/g}, exile this creature from your graveyard:
Create a green 1/1 mutant squirrel creature
token."
Eldritch Blast—When Squirrelly attacks, you may
pay {u/b}{u/b}. If you do, tap target creature.
"Squirrelly Tufferson, pleased ta meetcha."