Rosie Cotton of South Lane, Ashnod's Altar, and Pentavus

Prerequisites

• Rosie Cotton of South Lane on the battlefield
• Ashnod's Altar on the battlefield
• Pentavus on the battlefield
• Pentavus has at least two +1/+1 counters on it
• 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 Ashnod's Altar by sacrificing the Pentavite, adding
4. Repeat
5. Once you have infinite mana, you may forego sacrificing the Pentavite tokens

Results

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