Initial Card State
- Necrotic Ooze on the battlefield.
- Stern Marshal and Devoted Druid in your graveyard.
Notable Prerequisites
- Necrotic Ooze does not have summoning sickness.
- It is your precombat main phase.
Steps
- During your precombat main phase, activate Necrotic Ooze using Stern Marshal's ability by tapping it, giving it +2/+2 until end of turn.
- Activate Necrotic Ooze using Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
- Repeat.
- Once Necrotic Ooze has infinite toughness, you may instead use Devoted Druid's first ability to get infinite green mana.
Results
- Infinite green mana.
- Infinitely large creature until end of turn.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).