Krenko, Mob Boss, Umbral Mantle, and Phyrexian Altar

Prerequisites

• Krenko, Mob Boss on the battlefield
• Umbral Mantle on the battlefield
• Phyrexian Altar on the battlefield
• undefined

Steps

1. Activate Krenko by tapping it, creating at least three 1/1 Goblin creature tokens
2. Activate Phyrexian Altar three times by sacrificing three Goblin tokens, adding
3. Activate Krenko by paying and untapping it, giving it +2/+2 until end of turn
4. Repeat

Results

• Infinite colored mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite power and toughness for a creature until end of turn