Grim Monolith, Dockside Extortionist, and Eldrazi Displacer

Prerequisites

• Grim Monolith on the battlefield
• Dockside Extortionist on the battlefield
• Eldrazi Displacer on the battlefield
• Your opponents control at least five artifacts and/or enchantments

Steps

1. Activate Grim Monolith's first ability by tapping it, adding
2. Activate Eldrazi Displacer by paying , blinking Dockside Extortionist, creating four Treasure tokens
3. Activate four Treasure tokens by tapping those, adding four mana of any color
4. Activate Grim Monolith's last ability by paying , untapping it
5. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite ETB
• Infinite Treasure tokens
• Infinite LTB
• Infinite blinking of creatures you control except Eldrazi Displacer
• Infinite blinking