High Alert + Myr Welder + Prismatic Geoscope

WU identity

Commander legal

The 3 combo pieces

• High Alert
• Myr Welder
• Prismatic Geoscope

What must be in place

You control a land of each basic land type.

How to execute it

1. Activate Myr Welder using Prismatic Geoscope's ability by tapping it, adding {3}{W}{U}.
2. Activate High Alert by paying {2}{W}{U}, untapping Myr Welder.
3. Repeat.

What the combo produces

• Infinite colored mana
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control