Morselhoarder, Sinking Feeling, and Multani's Harmony

Prerequisites

• Morselhoarder on the battlefield
• Sinking Feeling on the battlefield
• Multani's Harmony on the battlefield
• Sinking Feeling and Multani's Harmony attached to Morselhoarder
• Morselhoarder does not have summoning sickness
• available

Steps

1. Activate Morselhoarder by tapping it to add a mana of any color
2. Activate Sinking Feeling, by paying and putting a -1/-1 counter on Morselhoarder to untap it
3. Activate Morselhoarder by removing a -1/-1 counter from it to add a mana of any color
4. Repeat

Results

• Infinite colored mana
• Infinite ETB