Cast Slumbering Dragon by paying {R}.
When Slumbering Dragon enters the battlefield, Ganax and Cloudstone Curio trigger.
Resolve the Ganax trigger, creating a Treasure artifact token.
Resolve the Cloudstone Curio trigger, returning Shivan Devastator from the battlefield to your hand.
Activate the Treasure by tapping and sacrificing it, adding {R}.
Cast Shivan Devastator by paying {R}.
When Shivan Devastator enters the battlefield, Ganax and Cloudstone Curio trigger.
Resolve the Ganax trigger, creating a Treasure artifact token.
Resolve the Cloudstone Curio trigger, returning Slumbering Dragon from the battlefield to your hand.
Activate the Treasure by tapping and sacrificing it, adding {R}.
Repeat.

Infinite creature ETB

Infinite creature LTB

Infinite storm count

Ganax, Astral Hunter

Cloudstone Curio

Slumbering Dragon

Shivan Devastator

Crucible of Fire

Cast Skithiryx by paying {3}{B}{B}.
Skithiryx enters the battlefield, triggering Warstorm Surge, giving an opponent seven poison counters.
Cast Rite of Replication with kicker by paying {7}{U}{U}, creating five token copies of Skithiryx.
Put all five Skithiryx tokens into your graveyard due to the legend rule.
Warstorm Surge triggers for each Skithiryx token.
Resolve the first Skithiryx trigger, giving an opponent seven poison counters.
If the opponent has ten or more poison counters, they lose the game as a state-based action.
Repeat from step 6 for each remaining trigger.

Each opponent loses the game

Skithiryx, the Blight Dragon

Warstorm Surge

Rite of Replication

Combos with "Crucible of Fire"