Cast Lightning Volley by paying {3}{R}.
Activate Polyraptor by tapping it, dealing 1 damage to itself.
Polyraptor triggers, creating a copy of itself.
Repeat from step 2, using the undamaged Polyraptor instead.

Infinite creature ETB

Infinite tapped creature tokens

Lightning Volley

Polyraptor

Concordant Crossroads

Cast Lightning Volley by paying {3}{R}.
Activate Warchanter Skald by tapping it.
Warchanter Skald triggers, creating a 2/1 Dwarf Berserker creature token.
The Dwarf Berserker enters the battlefield, triggering Intruder Alarm, untapping all creatures.
Resolve the Warchanter Skald ability from step 2, dealing 1 damage to any target.
Repeat from step 2.

Infinite creature tokens

Infinite damage

Infinite mana creatures you control can produce

Infinite untap of creatures

Warchanter Skald

Intruder Alarm

Cast Lightning Volley by paying {3}{R}.
Activate the creature with Druid's Call attached by tapping it, dealing 1 damage to itself.
Druid's Call triggers, creating a 1/1 Squirrel creature token.
The Squirrel enters the battlefield, triggering Intruder Alarm, untapping all creatures.
Repeat from step 2.

Infinite untap of creatures you control

Druid's Call

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

Infinite death triggers

Infinite creature LTB

Infinite creature sacrifice triggers

Phyrexian Altar

Pemmin's Aura

Cast Lightning Volley by paying {3}{R}.
Activate Warchanter Skald by tapping it.
Warchanter Skald triggers, creating a 2/1 Dwarf Berserker creature token.
Resolve the Warchanter Skald ability from step 2, dealing 1 damage to any target.
Activate Phyrexian Altar by sacrificing the Dwarf Berserker, adding {U}.
Activate Freed from the Real's second ability by paying {U}, untapping Warchanter Skald.
Repeat from step 2.

Combos with "Lightning Volley"