Vrondiss, Rage of Ancients, Rite of Passage, Outpost Siege, and Scourge of Valkas

Prerequisites

• Vrondiss, Rage of Ancients on the battlefield
• Rite of Passage on the battlefield
• Outpost Siege on the battlefield
• Scourge of Valkas on the battlefield
• You have a way to deal non-lethal damage to Vrondiss
• "Dragons" chosen with Outpost Siege

Steps

1. Deal damage to Vrondiss
2. Rite of Passage and Vrondiss trigger
3. Resolve the Rite of Passage trigger, putting a +1/+1 counter on Vrondiss
4. Resolve the Vrondiss trigger, creating a 5/4 Dragon Spirit creature token
5. The Dragon Spirit enters the battlefield, triggering Scourge of Valkas, causing the Dragon Spirit to deal damage equal to the number of Dragons you control to any target
6. The Dragon Spirit triggers, causing you to sacrifice it
7. The Dragon dies, triggering Outpost Siege, dealing 1 damage to Vronidss
8. Repeat from step 2

Results

• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers