Aphetto Alchemist + Crackdown Construct

U identity

Commander legal

The 2 combo pieces

• Aphetto Alchemist
• Crackdown Construct

What must be in place

Aphetto Alchemist does not have summoning sickness.

How to execute it

1. Activate Aphetto Alchemist by tapping it, targeting itself.
2. Crackdown Construct triggers, giving itself +1/+1 until end of turn.
3. Resolve the Aphetto Alchemist ability, untapping it.
4. Repeat.

What the combo produces

• Infinitely large creature until end of turn