Crackdown Construct + Gemstone Array + Zirda, the Dawnwaker

Mana needed: {1}

RW identity

Commander legal

The 3 combo pieces

• Crackdown Construct
• Gemstone Array
• Zirda, the Dawnwaker

How to execute it

1. Activate Gemstone Array's first ability by paying {1}.
2. Crackdown Construct triggers, getting +1/+1 until end of turn.
3. Resolve Gemstone Array's ability, putting a charge counter on it.
4. Activate Gemstone Array's second ability by removing a charge counter from it, adding {1}.
5. Repeat.

What the combo produces

• Infinitely large creature