Rosie Cotton of South Lane, Phyrexian Altar, and Pentavus

Prerequisites

• Rosie Cotton of South Lane on the battlefield
• Phyrexian Altar on the battlefield
• Pentavus on the battlefield
• available

Steps

1. Activate Pentavus' first ability by paying and removing a +1/+1 counter from it, creating a 1/1 Pentavite creature token
2. Rosie triggers, putting a +1/+1 counter on Pentavus
3. Activate Phyrexian Altar by sacrificing the Pentavite, adding
4. Repeat

Results

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