Haru, Hidden Talent, Ashaya, Soul of the Wild, and Food Chain

Prerequisites

• Haru, Hidden Talent on the battlefield
• Ashaya, Soul of the Wild on the battlefield
• Food Chain on the battlefield

Steps

1. Cast the Ally by paying its mana cost
2. When the Ally enters as a Forest due to Ashaya, Haru triggers, earthbending the Ally
3. Activate the Ally by tapping it, adding
4. Activate Food Chain by exiling the Ally, adding an amount of mana of any color equal to the Ally's mana value plus one that can only be spent to cast creature spells
5. Haru triggers, returning the Ally from exile to the battlefield
6. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite green mana
• Infinite landfall triggers
• Infinite colored mana that can only be spent to cast creature spells