Wake the Dead + Archaeomancer + Peregrine Drake + Carrion Feeder
Wake the Dead
Archaeomancer
Peregrine Drake
Carrion Feeder
Infinite +1/+1 counters on a creatureInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite mana lands you control can produceInfinite creature sacrifice triggersInfinite untap of lands you control
How it works
During an opponent's combat step, activate up to five lands you control by tapping them, adding at least 3.
Cast Wake the Dead by paying 2, returning Archaeomancer and Peregrine Drake from your graveyard to the battlefield.
Peregrine Drake and Archaeomancer enter the battlefield, triggering their abilities.
Resolve the Peregrine Drake trigger, untapping up to five lands you control.
Resolve the Archaeomancer trigger, returning Wake the Dead from your graveyard to your hand.
Activate Carrion Feeder twice by sacrificing Peregrine Drake and Archaeomancer, putting two +1/+1 counters on Carrion Feeder.
Repeat.
This brilliant recursion loop hinges on casting Wake the Dead during an opponent's combat step to pull both Archaeomancer and Peregrine Drake straight from your graveyard. As Peregrine Drake hits the battlefield, its enters-the-trigger untaps your lands to refund your mana, while Archaeomancer grabs Wake the Dead right back to your hand for the next iteration. Before looping, you can feed both creatures to Carrion Feeder to turn your endless cycle into an ever-growing threat with infinite +1/+1 counters.