Queen Allenal of Ruadach, Thopter Squadron, and Ashnod's Altar

Prerequisites

• Queen Allenal of Ruadach on the battlefield
• Thopter Squadron on the battlefield
• Ashnod's Altar on the battlefield
• Thopter Squadron has at least two +1/+1 counters on it available

Steps

1. Activate Thopter Squadron's first ability by paying and removing a +1/+1 counter from it, creating a 1/1 Thopter artifact creature token and a 1/1 Soldier creature token
2. Activate Ashnod's Altar by sacrificing the Soldier, adding
3. Activate Thopter Squadron's second ability by paying and sacrificing the Thopter, putting a +1/+1 counter on it
4. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers