Body Launderer, Felidar Guardian, Mikaeus, the Unhallowed, and Carrion Feeder

Prerequisites

• Body Launderer on the battlefield
• Felidar Guardian on the battlefield
• Mikaeus, the Unhallowed on the battlefield
• Carrion Feeder on the battlefield

Steps

1. Activate Carrion Feeder 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 Carrion Feeder by sacrificing Felidar Guardian
7. When Felidar Guardian dies, Body Launderer's first ability triggers, causing it to connive
8. Resolve the Carrion Feeder ability from step 6, putting a +1/+1 counter on it
9. Resolve the Felidar Guardian trigger from step 5, blinking Body Launderer
10. Resolve the Carrion Feeder ability from step 1, putting a +1/+1 counter on it
11. Activate Carrion Feeder 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 Carrion Feeder ability from step 11, putting a +1/+1 counter on it
17. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Infinite looting
• Near-infinite +1/+1 counters on a creature
• Near-infinite blinking of permanents
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite mana permanents you control can produce
• Near-infinite sacrifice triggers