Improvised Arsenal, Crime Novelist, Krark-Clan Ironworks, and Kaya, Geist Hunter

Prerequisites

• Improvised Arsenal on the battlefield
• Crime Novelist on the battlefield
• Krark-Clan Ironworks on the battlefield
• Kaya, Geist Hunter on the battlefield
• available

Steps

1. Activate Kaya's second loyalty ability by removing two loyalty counters from it, causing you to double any tokens you create this turn
2. Activate Improvised Arsenal by paying , creating two token copies of it due to Kaya, Geist Hunter
3. Activate Krark-Clan Ironworks twice by sacrificing the Improvised Arsenal tokens, adding
4. Crime Novelist triggers twice, putting two +1/+1 counters on it and adding
5. Repeat from step 2

Results

• Infinite colorless mana
• Infinite red mana
• Infinite +1/+1 counters on a creature