Vish Kal, Blood Arbiter, Haunted One, and Honor-Worn Shaku

Prerequisites

• Vish Kal, Blood Arbiter on the battlefield
• Haunted One on the battlefield
• Honor-Worn Shaku on the battlefield

Steps

1. Activate Vish Kal's second ability by removing all +1/+1 counters from it, targeting itself
2. Holding priority, activate Honor-Worn Shaku's first ability by tapping it, adding
3. Activate Honor-Worn Shaku's second ability by tapping Vish Kal
4. Vish Kal triggers, giving it and all Vampires you control +2/+0 and undying until end of turn
5. Resolve the Honor-Worn Shaku ability, untapping it
6. Activate Vish Kal's first ability by sacrificing it
7. The Vish Kal abilities from step 1 and step 6 fail to resolve due to Vish Kal no longer being on the battlefield
8. Vish Kal dies, triggering its undying ability, returning it to the battlefield with a +1/+1 counter on it
9. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count