Cast a copy of Seething Song from exile by paying no more than {1}{R}, adding {R}{R}{R}{R}{R}.
Activate Emiel the Blessed by paying {3}, blinking Blazing Firesinger, which enters prepared.
Repeat.

Infinite creature ETB

Infinite creature LTB

Infinite magecraft triggers

Infinite storm count

Blazing Firesinger // Seething Song

Emiel the Blessed

Dirgur Focusmage // Braingeyser

Activate an animated land by tapping it, adding at least {U}.
Cast View from Above by paying {U}, targeting the animated land.
Orvar triggers, creating a token copy of the animated land that is not a creature.
Resolve View from Above, returning it to your hand.
Activate the land token by tapping it, adding at least {U}.
Repeat from step 2.

Infinite artifact ETB

Infinite landfall triggers

Infinite tapped Island tokens

Card That Animates a Land

Orvar, the All-Form

View from Above

Activate Kiki-Jiki by tapping it, copying Blazing Firesinger. It'll enter prepared due to its effect.
Cast a copy of Seething Song by paying {1}{R} due to Dirgur Focusmage // Braingeyser.
Hematite Talisman triggers, causing you to pay {3} to untap Kiki-Jiki.
Resolve Seething Song, adding {R}{R}{R}{R}{R}.
Repeat.

Infinite creature tokens with haste

Infinite death triggers

Infinite creature sacrifice triggers

Kiki-Jiki, Mirror Breaker

Hematite Talisman

Cast Nameless Inversion from your graveyard, as it is a Knight card, by paying {0} due to Dirgur Focusmage and Morophon, giving a creature +3/-3 until end of turn.
If the creature has toughness 0 or less, the creature dies as a state-based action.
Repeat as desired.

Combos with "Dirgur Focusmage // Braingeyser"