Ulasht, the Hate Seed, Ivy Lane Denizen, and Ashnod's Altar

Prerequisites

• Ulasht, the Hate Seed on the battlefield
• Ivy Lane Denizen on the battlefield
• Ashnod's Altar on the battlefield
• Ulasht has at least two +1/+1 counters on it
• available

Steps

1. Activate Ulasht by paying and removing a +1/+1 counter from it, creating a 1/1 Saproling creature token
2. The Saproling enters the battlefield, triggering Ivy Lane Denizen, putting a +1/+1 counter on Ulasht
3. Activate Ashnod's Altar by sacrificing the Saproling, adding
4. Repeat

Results

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