Crystalline Crawler + Iron Spider, Stark Upgrade + Pemmin's Aura

U identity

Commander legal

The 3 combo pieces

• Crystalline Crawler
• Iron Spider, Stark Upgrade
• Pemmin's Aura

How to execute it

1. Activate Iron Spider by tapping it, putting a +1/+1 counter on each artifact creature and Vehicle you control.
2. Activate Crystalline Crawler by removing a +1/+1 counter from it, adding {U}.
3. Activate Pemmin's Aura by paying {U}, untapping Iron Spider.
4. Repeat.

What the combo produces

• Infinite +1/+1 counters on all Vehicles you control
• Infinite +1/+1 counters on certain creatures