Goblin Warrens, Phyrexian Altar, and Kaya, Geist Hunter

Prerequisites

• Goblin Warrens on the battlefield
• Phyrexian Altar on the battlefield
• Kaya, Geist Hunter on the battlefield
• Kaya has at least two loyalty counters on it
• You control at least two Goblins
• 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. Activate Goblin Warrens by paying and sacrificing two Goblins, creating six 1/1 Goblin creature tokens
3. Activate Phyrexian Altar three times by sacrificing three Goblins, adding
4. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite creature tokens