Cast Desperate Ritual by paying {1}{R} and choosing to pay {2}{R}{R} and reveal Through the Breach from your hand, adding Through the Breach's effects to Desperate Ritual.
Holding priority, activate Rootha by paying {2} and returning it to your hand, copying Desperate Ritual.
Resolve the copy of Desperate Ritual, adding {R}{R}{R} and putting Rootha from your hand onto the battlefield.
Repeat from step 2.

Infinite creature ETB

Infinite creature LTB

Infinite magecraft triggers

Infinite red mana

Rootha, Mercurial Artist

Desperate Ritual

Through the Breach

Cast Through the Breach by paying {4}{R}.
Storm-Kiln Artist and Veyran trigger twice.
Resolve the Veyran triggers, giving it +2/+2 until end of turn.
Resolve the Storm-Kiln Artist triggers, creating two Treasure tokens.
Activate the Treasure tokens by tapping and sacrificing them, adding {2}.
Activate Rootha by paying {2} and returning it from the battlefield to your hand, copying Through the Breach.
Storm-Kiln Artist and Veyran trigger twice.
Resolve the Veyran triggers, giving it +2/+2 until end of turn.
Resolve the Storm-Kiln Artist triggers, creating two Treasure tokens.
Resolve the copy of Through the Breach, putting Rootha from your hand onto the battlefield.
Repeat from step 5.

Infinite artifact ETB

Infinite artifact LTB

Infinitely large creature until end of turn

Veyran, Voice of Duality

Storm-Kiln Artist

Cast Through the Breach by paying {4}{R}.
Storm-Kiln Artist triggers twice, creating two Treasure tokens.
Activate the Treasure tokens by tapping and sacrificing them, adding {2}.
Activate Rootha by paying {2} and returning it from the battlefield to your hand, copying Through the Breach.
Storm-Kiln Artist triggers twice, creating two Treasure tokens.
Resolve the copy of Through the Breach, putting Rootha from your hand onto the battlefield.
Repeat from step 3.

Harmonic Prodigy

Cast Through the Breach by paying {4}{R}.
Storm-Kiln Artist triggers, creating a Treasure token.
Activate a Treasure token by tapping and sacrificing it, adding {2}.
Activate Rootha by paying {2} and returning it from the battlefield to your hand, copying Through the Breach.
Storm-Kiln Artist triggers, creating a Treasure token.
Resolve the copy of Through the Breach, putting Rootha from your hand onto the battlefield.
Repeat from step 3.

Goldspan Dragon

Cast Through the Breach by paying {4}{R}.
Holding priority, activate Rootha by paying {2} and returning it to your hand, copying Through the Breach.
Resolve the copy of Through the Breach, putting Rootha from your hand onto the battlefield.
Rootha enters the battlefield, triggering Mana Echoes, adding at least {C}{C}.
Repeat from step 2.
 If you control two other Orcs and/or Shamans, this combo nets infinite colorless mana.

Infinite colorless mana

Infinite storm count

Mana Echoes

Cast Through the Breach by paying {4}{R}.
Storm-Kiln Artist triggers, creating two Treasure tokens.
Activate the Treasure tokens by tapping and sacrificing them, adding {2}.
Activate Rootha by paying {2} and returning it from the battlefield to your hand, copying Through the Breach.
Storm-Kiln Artist triggers, creating two Treasure tokens.
Resolve the copy of Through the Breach, putting Rootha from your hand onto the battlefield.
Repeat from step 3.

Xorn

Cast Through the Breach by paying {4}{R}.
Storm-Kiln Artist triggers, creating a Treasure token.
Activate Krark-Clan Ironworks by sacrificing the Treasure, adding {C}{C}.
Activate Rootha by paying {2} and returning it from the battlefield to your hand, copying Through the Breach.
Storm-Kiln Artist triggers, creating a Treasure token.
Resolve the copy of Through the Breach, putting Rootha from your hand onto the battlefield.
Repeat from step 3.

Combos with "Through the Breach"