Crackdown Construct, Song of Freyalise, and Simic Ragworm

Prerequisites

• Crackdown Construct on the battlefield
• Song of Freyalise on the battlefield
• Simic Ragworm on the battlefield
• Simic Ragworm does not have summoning sickness
• Song of Freyalise has one or two lore counters on it

Steps

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

Results

• Infinitely large Crackdown Construct until end of turn