Trazyn the Infinite, Grim Monolith, and Nyx Lotus

Prerequisites

• Trazyn the Infinite on the battlefield
• Grim Monolith in the graveyard
• Nyx Lotus in the graveyard

Steps

1. Activate Trazyn using Nyx Lotus's ability by tapping it, adding at least five mana of any color
2. Activate Trazyn using Grim Monolith's ability by paying , untapping Trazyn
3. Repeat

Results

• Infinite colorless mana
• Infinite mana among colors with which you have devotion