Ominous Roost, Marang River Prowler, Animar, Soul of Elements, Ashnod's Altar, and Stonework Packbeast

Prerequisites

• Ominous Roost on the battlefield
• Marang River Prowler on the battlefield
• Animar, Soul of Elements on the battlefield
• Ashnod's Altar on the battlefield
• Stonework Packbeast on the battlefield
• Animar has at least two +1/+1 counters on it

Steps

1. Activate Ashnod's Altar by sacrificing Marang River Prowler, adding
2. Activate Stonework Packbeast by paying , adding
3. Cast Marang River Prowler from your graveyard for
4. Ominous Roost triggers, creating a 1/1 Bird creature token
5. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count
• Infinite +1/+1 counters on Animar