Color Identity: U

Initial Card State
- Crackdown Construct and Aphetto Alchemist on the battlefield.
Notable Prerequisites
- Aphetto Alchemist does not have summoning sickness.
Steps
- Activate Aphetto Alchemist by tapping it, targeting itself.
- Crackdown Construct triggers, giving itself +1/+1 until end of turn.
- Resolve the Aphetto Alchemist ability, untapping it.
- Repeat.
Results
- Infinitely large creature until end of turn.
Bracket Tag
This combo has been estimated to be Oddball (Bracket 2-3+).