All 7 Combos with Torrential Gearhulk

Hanabi Blast + Deadeye Navigator + Torrential Gearhulk + Storm-Kiln Artist + Birgi, God of Storytelling // Harnfel, Horn of Bounty

Infinite Damage: Infinite damage, Infinite ETB, Infinite LTB, Infinite magecraft triggers, Infinite self-discard triggers, Infinite storm count

Activate Torrential Gearhulk by paying {1}{U}, blinking it. When Torrential Gearhulk enters the battlefield, it and Deadeye Navigator's soulbond ability trigger. Resolve the Deadeye Navigator trigger, repairing it and Torrential Gearhulk. Resolve a Torrential Gearhulk trigger, casting Hanabi Blast from your graveyard without paying its mana cost. Storm-Kiln Aritst and Birgi trigger. Resolve the Birgi trigger, adding {R}. Resolve the Storm-Kiln Artist, creating a Treasure artifact token. Resolve Hanabi Blast, dealing 2 damage to any target, returning Hanabi Blast to your hand, and then causing you to discard Hanabi Blast. Activate the Treasure token by tapping and sacrificing it, adding {U}. Repeat.