Myr Welder + Prismatic Geoscope + Umbral Mantle

C identity

Commander legal

The 3 combo pieces

• Myr Welder
• Prismatic Geoscope
• Umbral Mantle

What must be in place

There are at least three basic land types among lands you control

How to execute it

1. Activate Myr Welder using Prismatic Geoscope's ability by tapping it, adding at least {3}.
2. Activate Myr Welder by paying {3} and untapping it, giving it +2/+2 until end of turn.
3. Repeat.

What the combo produces

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