Orthion, Hero of Lavabrink, Dockside Extortionist, and Umbral Mantle

Prerequisites

• Orthion, Hero of Lavabrink on the battlefield
• Dockside Extortionist on the battlefield
• Umbral Mantle on the battlefield
• Orthion does not have summoning sickness
• Umbral Mantle attached to Orthion
• Opponents control at least five artifacts and/or enchantments
• available

Steps

1. Activate Orthion's first ability by paying and tapping it, creating a token copy of Dockside Extortionist with haste
2. When the token Dockside Extortionist enters the battlefield, it triggers, creating at least five Treasure artifact tokens
3. Activate five Treasures by tapping and sacrificing them, adding
4. Activate Orthion by paying and untapping it, giving itself +2/+2 until end of turn
5. Repeat
6. If opponents control at least six artifacts and/or enchantments, this combo nets infinite Treasure tokens and colored mana, and you may then target any other creature using Orthion's ability

Results

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