Devoted Druid + Necrotic Ooze + Stern Marshal

WBG identity

Commander legal

The 3 combo pieces

• Devoted Druid
• Necrotic Ooze
• Stern Marshal

What must be in place

Necrotic Ooze does not have summoning sickness.
It is your precombat main phase.

How to execute it

1. During your precombat main phase, activate Necrotic Ooze using Stern Marshal's ability by tapping it, giving it +2/+2 until end of turn.
2. Activate Necrotic Ooze using Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
3. Repeat.
4. Once Necrotic Ooze has infinite toughness, you may instead use Devoted Druid's first ability to get infinite green mana.

What the combo produces

• Infinite green mana
• Infinitely large creature until end of turn