Marath, Will of the Wild, Mana Echoes, and Ivy Lane Denizen

Prerequisites

• Marath, Will of the Wild on the battlefield
• Mana Echoes on the battlefield
• Ivy Lane Denizen on the battlefield
• Marath has at least two +1/+1 counters on it
• available

Steps

1. Activate Marath by paying and removing a +1/+1 counter from it, creating a 1/1 Elemental creature token
2. When the Elemental enters the battlefield, Ivy Lane Denizen and Mana Echoes trigger
3. Resolve the Mana Echoes trigger, adding at least
4. Resolve the Ivy Lane Denizen trigger, putting a +1/+1 counter on Marath
5. Repeat

Results

• Infinite colorless mana
• Infinite creature tokens
• Infinite ETB