Rampaging Classmate

Whenever you draw a card, put a +1/+1 counter on target creature.

When this creature dies, each opponent loses 2 life and you gain 2 life.

Creatures you control get +1/+1. Whenever you attack with one or more legendary creatures, you gain that much life.

T, Discard two cards: Draw three cards, then put a fuse counter on this artifact. It deals damage equal to the number of fuse counters on it to target opponent. They gain control of this artifact.

At the beginning of combat on your turn, target noncreature artifact you control becomes an 8/8 Robot Villain artifact creature in addition to its other types.

Vigilance (Attacking doesn't cause this creature to tap.) Whenever you gain life, put a +1/+1 counter on MJ.

Put two +1/+1 counters on target creature you control. It deals damage equal to its power to up to one other target creature.

This spell costs 1 less to cast for each creature that attacked this turn. Menace (This creature can't be blocked except by two or more creatures.)