Necrotic Ooze + Wizard Class + Barrenton Medic + Niv-Mizzet, the Firemind

Necrotic Ooze

Wizard Class

Barrenton Medic

Niv-Mizzet, the Firemind

How it works

1. Activate Necrotic Ooze using Niv-Mizzet's ability by tapping it, causing you to draw a card.
2. Wizard Class triggers, putting a +1/+1 counter on Necrotic Ooze.
3. Activate Necrotic Ooze using Barrenton Medic's second ability by putting a -1/-1 counter on it, untapping it.
4. Repeat.

This clever loop turns Necrotic Ooze into an absolute powerhouse by stitching together the best parts of its graveyard victims. With Wizard Class leveled up to three, every drawn card triggers a +1/+1 counter that neatly cancels out the -1/-1 counter required to untap Necrotic Ooze using Barrenton Medic's untap ability. Meanwhile, tapping Necrotic Ooze to draw via Niv-Mizzet, the Firemind's activated ability keeps the cards flowing while simultaneously pinging down any target.