Activate Improvised Arsenal by paying {4}{R}, creating two token copies of it due to Anointed Procession.
Activate Krark-Clan Ironworks twice by sacrificing the Improvised Arsenal tokens, adding {C}{C}{C}{C}.
Crime Novelist triggers twice, putting two +1/+1 counters on it and adding {R}{R}.
Repeat.

Infinite artifact ETB

Infinite artifact LTB

Infinite artifact sacrifice triggers

Infinite colorless mana

Infinite red mana

Infinite +1/+1 counters on a creature

Improvised Arsenal

Crime Novelist

Krark-Clan Ironworks

Anointed Procession

Activate Improvised Arsenal by paying {4}{R}, creating a token copy of it.
Chishiro triggers, creating a creature token.
When the creature token enters, Mana Echoes triggers, adding {C} for each creature you control that shares a creature type with the creature token.
If needed, activate Crossroads Candleguide by paying {2}, adding {R}.
Repeat.

Infinite artifact tokens

Infinite creature ETB

Infinite colored mana

Infinite creature tokens that are infinitely powerful

Infinitely powerful creatures you control

Mana Echoes

Chishiro, the Shattered Blade

Crossroads Candleguide

Activate Improvised Arsenal by paying {5}, creating a token copy of it.
Chishiro triggers, creating a creature token.
When the creature token enters, Mana Echoes triggers, adding {C} for each creature you control that shares a creature type with the creature token.
Repeat.

Mycosynth Lattice

Activate Improvised Arsenal by paying {4}{R}, creating a token copy of it. It will enter as a 7/7 Dinosaur due to Displaced Dinosaurs.
When the Improvised Arsenal token enters, Mana Echoes triggers, adding {C} for each Dinosaur you control.
If needed, activate Crossroads Candleguide by paying {2}, adding {R}.
Repeat.

Infinite creature tokens

Displaced Dinosaurs

Activate Improvised Arsenal by paying {5}, creating a token copy of it. It will enter as a 7/7 Dinosaur due to Displaced Dinosaurs.
When the Improvised Arsenal token enters, Mana Echoes triggers, adding {C} for each Dinosaur you control.
Repeat.

Chromatic Orrery

Combos with "Improvised Arsenal"