Thopter Squadron, Dross Scorpion, and Dreamstone Hedron

Prerequisites

• Thopter Squadron on the battlefield
• Dross Scorpion on the battlefield
• Dreamstone Hedron on the battlefield
• Thopter Squadron has at least two +1/+1 counters

Steps

1. Activate Dreamstone Hedron by tapping it, adding
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 Dreamstone Hedron
5. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers