Sprout Swarm, Ashnod's Altar, and Kaya, Geist Hunter

Prerequisites

• Sprout Swarm in hand
• Ashnod's Altar on the battlefield
• Kaya, Geist Hunter on the battlefield
• at most available

Steps

1. Activate Kaya's second loyalty ability by removing two loyalty counters from it, causing you to double any tokens you create this turn
2. Cast Sprout Swarm with buyback by paying at most , creating two creature tokens and returning Sprout Swarm from the battlefield to your hand
3. Cast Sprout Swarm with buyback by paying at most and tapping two creature tokens, creating two creature tokens and returning Sprout Swarm from the battlefield to your hand
4. Activate Ashnod's Altar twice by sacrificing two tapped creature tokens, adding Repeat from step 3

Results

• Infinite ETB
• Infinite LTB
• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite storm count