Mighty Mutanimals, and Basking Broodscale

Prerequisites

• Mighty Mutanimals in hand
• Basking Broodscale on the battlefield
• available

Steps

1. Cast Mighty Mutanimals by paying
2. When Mighty Mutanimals enters, its first ability triggers, creating a 2/2 Mutant creature token
3. When the Mutant enters, Mighty Mutanimals' second ability triggers, putting a +1/+1 counter on Basking Broodscale
4. Basking Broodscale triggers, creating a creature token
5. When the creature token enters, Mighty Mutanimals' second ability triggers, putting a +1/+1 counter on Basking Broodscale
6. Repeat from step 4

Results

• Infinite +1/+1 counters on a creature
• Infinite ETB
• Infinite LTB
• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite sacrifice triggers