Body Launderer, Felidar Guardian, Mikaeus, the Unhallowed, and Viscera Seer

Prerequisites

• Body Launderer on the battlefield
• Felidar Guardian on the battlefield
• Mikaeus, the Unhallowed on the battlefield
• Viscera Seer on the battlefield
• Felidar Guardian does not have a +1/+1 counter on it

Steps

1. Activate Viscera Seer by sacrificing Felidar Guardian
2. When Felidar Guardian dies, its undying ability and Body Launderer's first ability trigger
3. Resolve the Body Launderer trigger, causing it to connive
4. Resolve the Felidar Guardian trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it
5. When Felidar Guardian enters the battlefield, it triggers, targeting Body Launderer
6. Holding priority, activate Viscera Seer by sacrificing Felidar Guardian
7. When Felidar Guardian dies, Body Launderer's first ability triggers, causing it to connive
8. Resolve the Viscera Seer ability from step 6, causing you to scry 1
9. Resolve the Felidar Guardian trigger from step 5, blinking Body Launderer
10. Resolve the Viscera Seer ability from step 1, causing you to scry 1
11. Activate Viscera Seer by sacrificing Body Launderer
12. When Body Launderer dies, its undying and second ability triggers
13. Resolve the undying trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it
14. Resolve the second Body Launderer trigger, returning Felidar Guardian from your graveyard to the battlefield
15. When Felidar Guardian enters the battlefield, it triggers, blinking any other permanent you control
16. Resolve the Viscera Seer ability from step 11, causing you to scry 1
17. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Infinite looting
• Near-infinite blinking of permanents you control
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite mana permanents you control can produce
• Near-infinite sacrifice triggers