Necrotic Ooze + Wizard Class + Devoted Druid + Thought Courier

Necrotic Ooze

Wizard Class

Devoted Druid

Thought Courier

How it works

1. Activate Necrotic Ooze using Thought Courier's ability by tapping it, causing you to loot.
2. Wizard Class triggers, putting a +1/+1 counter on Necrotic Ooze.
3. Activate Necrotic Ooze using Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
4. Repeat.

This clever engine transforms Necrotic Ooze into a one-stop-shop for infinite filtering, powered entirely by the activated abilities resting quietly in your graveyard. By borrowing Devoted Druid's self-untapping mechanic, the Ooze can continuously tap to activate Thought Courier's loot effect—drawing cards, discarding whatever you don't need, and resetting itself for the next iteration. Meanwhile, Wizard Class serves as the crucial enabler, lifting its level to grant a passive growth trigger that feeds a +1/+1 counter onto the Ooze every time a card is drawn. Because those counters naturally cancel out the -1/-1 counters left behind by Devoted Druid, your mechanical foundation remains completely secure, allowing you to churn through your entire library at will.