Arbor Elf + Elvish Guidance + Umbral Mantle

G identity

Commander legal

The 3 combo pieces

• Arbor Elf
• Elvish Guidance
• Umbral Mantle

What must be in place

Umbral Mantle attached to Arbor Elf.
Elvish Guidance attached to a Forest you control.
Arbor Elf does not have summoning sickness.
You control at least three Elves.

How to execute it

1. Activate Arbor Elf by tapping it, untapping the Forest that has Elvish Guidance attached.
2. Activate the Forest by tapping it, adding {G}.
3. Elvish Guidance triggers, adding at least {G}{G}{G}.
4. Activate Arbor Elf by paying {3} and untapping it, giving it +2/+2 until end of turn.
5. 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