Sunastian Falconer, Umbral Mantle, and Nyxbloom Ancient

Prerequisites

• Sunastian Falconer on the battlefield
• Umbral Mantle on the battlefield
• Nyxbloom Ancient on the battlefield
• Umbral Mantle attached to Sunastian Falconer
• Sunastian Falconer does not have summoning sickness

Steps

1. Activate Sunastian Falconer by tapping it, adding six
2. Activate Sunastian Falconer by paying and untapping it, giving itself +2/+2 until end of turn
3. Repeat

Results

• Infinite colorless mana
• Infinitely large Sunastian Falconer until end of turn