Thopter Squadron, Dross Scorpion, and Coveted Jewel

Prerequisites

• Thopter Squadron on the battlefield
• Dross Scorpion on the battlefield
• Coveted Jewel on the battlefield

Steps

1. Activate Coveted Jewel by tapping it, adding three mana of any one color
2. Activate Thopter Squadron first ability by paying and removing +1/+1 counter, creating a 1/1 Thopter token
3. Activate Thopter Squadron second ability by paying and sacrificing a Thopter, putting a +1/+1 counter on itself
4. Dross Scorpion triggers, untapping Coveted Jewel
5. Repeat

Results

• Infinite colored mana
• Infinite death triggers
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers