Crackdown Construct + Horseshoe Crab + Song of Freyalise

GU identity

Commander legal

The 3 combo pieces

• Crackdown Construct
• Horseshoe Crab
• Song of Freyalise

What must be in place

Horseshoe Crab does not have summoning sickness.
Song of Freyalise has one or two lore counters on it.

How to execute it

1. Activate Horseshoe Crab by tapping it, adding {U}.
2. Activate Horseshoe Crab by paying {U}.
3. Crackdown Construct triggers, giving itself +1/+1 until end of turn.
4. Resolve the Horseshoe Crab ability, untapping it.
5. Repeat.

What the combo produces

• Infinitely large creature until end of turn