Scorched Ruins + Steward of the Harvest + Umbral Mantle

G identity

Commander legal

The 3 combo pieces

• Scorched Ruins
• Steward of the Harvest
• Umbral Mantle

How to execute it

1. Activate the creature with Umbral Mantle attached using Scorched Ruins's ability by tapping it, adding {C}{C}{C}{C}
2. Activate the creature by paying {3} and untapping it, giving it +2/+2 until end of turn.
3. Repeat.

What the combo produces

• Infinite colorless mana
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control
• Infinitely large creature until end of turn