Greenweaver Druid + Training Grounds + Umbral Mantle

GU identity

Commander legal

The 3 combo pieces

• Greenweaver Druid
• Training Grounds
• Umbral Mantle

What must be in place

Umbral Mantle attached to Greenweaver Druid.
Greenweaver Druid does not have summoning sickness.

How to execute it

1. Activate Greenweaver Druid by tapping it, adding {G}{G}.
2. Activate Greenweaver Druid by paying {1} and untapping it, giving itself +2/+2 until end of turn.
3. Repeat.

What the combo produces

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