Orthion, Hero of Lavabrink, Umbral Mantle, Ashnod's Altar, and Patron of the Arts

Prerequisites

• Orthion, Hero of Lavabrink on the battlefield
• Umbral Mantle on the battlefield
• Ashnod's Altar on the battlefield
• Patron of the Arts on the battlefield
• Orthion does not have summoning sickness
• Umbral Mantle attached to Orthion
• available

Steps

1. Activate Orthion's second ability by paying and tapping it, creating five token copies of Patron of the Arts with haste
2. When the Patron of the Arts tokens enter the battlefield, they trigger, creating five Treasure artifact tokens
3. Activate Ashnod's Altar three times by sacrificing three Patron of the Arts tokens, adding six
4. When the Patron of the Arts tokens die, they trigger, creating three Treasure artifact tokens
5. Activate six Treasures by tapping and sacrificing them, adding
6. Activate Orthion by paying and untapping it, giving it +2/+2 until end of turn
7. Repeat
8. Once you have infinite mana, you may instead target any other creature you control

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite copies of creatures you control with haste
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinitely large Orthion until end of turn
• Infinite sacrifice triggers
• Infinite Treasure tokens