Slogurk, the Overslime + Primal Prayers + Decoction Module + Hardened Academic

Slogurk, the Overslime

Primal Prayers

Decoction Module

Hardened Academic

How it works

1. Activate Hardened Academic by discarding a land card.
2. Slogurk triggers, putting a +1/+1 counter on it.
3. Resolve the Hardened Academic ability.
4. Repeat from step 1 two additional times.
5. Activate Slogurk by removing three +1/+1 counters from it, returning it from the battlefield to your hand.
6. When Slogurk leaves the battlefield, it triggers, returning three land cards from your graveyard to your hand.
7. Cast Slogurk by paying E due to Primal Prayers.
8. When Slogurk enters, Decoction Module triggers, causing you to get E.
9. Repeat.