Xavier Sal, Infested Captain, Herd Baloth, and Thornbite Staff

Prerequisites

• Xavier Sal, Infested Captain on the battlefield
• Herd Baloth on the battlefield
• Thornbite Staff on the battlefield
• You control at least one additional creature
• Xavier Sal does not have summoning sickness
• Herd Baloth has at least one +1/+1 counter on it
• Thornbite Staff attached to Xavier Sal

Steps

1. Activate Xavier Sal's second ability by tapping it and sacrificing any other creature you control
2. When the creature dies, Xavier Sal triggers, untapping Xavier Sal
3. Resolve the Xavier Sal ability from step 1, putting a +1/+1 counter on Herd Baloth
4. Herd Baloth triggers, creating a 4/4 Beast creature token
5. Repeat
6. Once you have infinite +1/+1 counters on Herd Baloth, you may instead use Xavier Sal's first ability to get infinite copies of creature tokens you control

Results

• Infinite +1/+1 counters on Herd Baloth
• Infinite copies of creature tokens you control
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite proliferate
• Infinite sacrifice triggers