Necrotic Ooze, Devoted Druid, and Channeler Initiate

Prerequisites

• Necrotic Ooze on the battlefield
• Devoted Druid in the graveyard
• Channeler Initiate in the graveyard
• Necrotic Ooze does not have summoning sickness

Steps

1. Tap Necrotic Ooze using Devoted Druid's ability to add
2. Untap Necrotic Ooze using Devoted Druid's ability, giving it a -1/-1 counter
3. Tap Necrotic Ooze and remove a -1/-1 counter use Channeler Initiate's ability to add of any color
4. Repeat for infinite mana

Results

• Infinite mana of any color