Devoted Druid, and Vizier of Remedies

Prerequisites

• Devoted Druid on the battlefield
• Vizier of Remedies on the battlefield
• Devoted Druid does not have summoning sickness

Steps

1. Activate Devoted Druid by tapping it, adding
2. Activate Devoted Druid by putting a zero -1/-1 counter on it due to Vizier of Remedies, untapping it
3. Repeat

Results

• Infinite green mana