Warchanter Skald, Phyrexian Altar, Pemmin's Aura, and Lightning Prowess

Prerequisites

• Warchanter Skald on the battlefield
• Phyrexian Altar on the battlefield
• Pemmin's Aura on the battlefield
• Lightning Prowess on the battlefield

Steps

1. Activate Warchanter Skald by tapping it
2. Warchanter Skald triggers, creating a 2/1 Dwarf Berserker creature token
3. Resolve the Warchanter Skald ability from step 1, dealing 1 damage to any target
4. Activate Phyrexian Altar by sacrificing the Dwarf Berserker, adding
5. Activate Pemmin's Aura's first ability by paying , untapping Warchanter Skald
6. Repeat

Results

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