Jackal, Genius Geneticist (Marvel's Spider-Man #131)

Legendary Creature — Human Scientist Villain - {G}{U}
Trample
Whenever you cast a creature spell with mana value equal to Jackal's power, copy that spell, except the copy isn't legendary. Then put a +1/+1 counter on Jackal. (The copy becomes a token.)
1/1
„For Professor Miles Warren, all any problem needs is a lot of clones and not a lot of ethics.“