Crackdown Construct, Cryptolith Rite, and Simic Ragworm

Prerequisites

• Crackdown Construct on the battlefield
• Cryptolith Rite on the battlefield
• Simic Ragworm on the battlefield
• Simic Ragworm does not have summoning sickness

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