Necrotic Ooze + Devoted Druid + Grim Poppet

Prerequisites

• Necrotic Ooze does not have summoning sickness.There is at least one additional creature on the battlefield.

Steps

1. 1Activate Necrotic Ooze using Devoted Druid's first ability by tapping it, adding .
2. 2Activate Necrotic Ooze using Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
3. 3Activate Necrotic Ooze using Grim Poppet's ability by removing a -1/-1 counter from it, targeting any other creature.
4. 4Holding priority, activate Necrotic Ooze using Devoted Druid's first ability by tapping it, adding .
5. 5Repeat from step 2.

Effects

• Infinite -1/-1 counters
• Infinite green mana