Reckoner Bankbuster, Coretapper, Ashnod's Altar, and Intruder Alarm

Prerequisites

• Reckoner Bankbuster on the battlefield
• Coretapper on the battlefield
• Ashnod's Altar on the battlefield
• Intruder Alarm on the battlefield
• available

Steps

1. Activate Reckoner Bankbuster by paying , tapping it, and removing a charge counter from it, drawing a card, creating a Treasure token and a 1/1 Pilot creature token
2. When the Pilot enters the battlefield, Intruder Alarm triggers
3. Holding priority, if Reckoner Bankbuster is not a creature, activate its crew ability by tapping the Pilot, causing Reckoner Bankbuster to become an artifact creatures until end of turn
4. Resolve the Intruder Alarm trigger, untapping all creatures
5. Activate Coretapper's first ability by tapping it, putting a charge counter on Reckoner Bankbuster
6. Activate Ashnod's Altar by sacrificing the Pilot token, adding
7. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite colored mana
• Near-infinite colorless mana
• Near-infinite creature tokens
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite sacrifice triggers
• Near-infinite Treasure tokens
• Near-infinite untap of all creatures