Ulasht, the Hate Seed, Battle of Hoover Dam, and Phyrexian Altar

Prerequisites

• Ulasht, the Hate Seed on the battlefield
• Battle of Hoover Dam on the battlefield
• Phyrexian Altar on the battlefield
• You control at least one additional creature

Steps

1. Activate Phyrexian Altar by sacrificing another creature you control, adding
2. When the creature dies, Battle of Hoover Dam triggers, putting two +1/+1 counters on Ulasht
3. Activate Ulasht's first ability by paying and removing a +1/+1 counter from it, creating a 1/1 Saproling creature token
4. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite +1/+1 counters