Machine God's Effigy, Horseshoe Crab, and Wake Thrasher

Prerequisites

• Machine God's Effigy in hand
• Horseshoe Crab on the battlefield
• Wake Thrasher on the battlefield
• available

Steps

1. Cast Machine God's Effigy by paying , choosing to have it enter the battlefield as a copy of Horseshoe Crab that is an artifact
2. Activate Machine God's Effigy by tapping it, adding
3. Activate Machine God's Effigy by paying , untapping it
4. Wake Thrasher triggers, giving itself +1/+1 until end of turn
5. Repeat from step 2

Results

• Infinitely large Wake Thrasher until end of turn