Prerequisites
- Scurry Oak on the battlefield
- Intruder Alarm on the battlefield
- Steel Overseer on the battlefield
- Encroaching Mycosynth on the battlefield
- Steel Overseer does not have summoning sickness
Steps
- Activate Steel Overseer by tapping it, putting +1/+1 counter on each artifact creature you control
- Scurry Oak triggers, creating a 1/1 Squirrel creature token
- The Squirrel enters the battlefield, triggering Intruder Alarm, untapping all creatures
- Repeat from step 2
Results
- Infinite +1/+1 counters
- Infinite creature tokens
- Infinite ETB
- Infinite mana creatures you control can produce
- Infinite untap of all creatures
Required Cards 4
Scurry Oak
Creature — Treefolk
Steel Overseer
Artifact Creature — Construct
Encroaching Mycosynth
Artifact