Glarb, Calamity's Augur + Valley Floodcaller + Eye of Duskmantle + Sensei's Divining Top + Aetherflux Reservoir

Glarb, Calamity's Augur

Valley Floodcaller

Eye of Duskmantle

Sensei's Divining Top

Aetherflux Reservoir

How it works

1. Activate Sensei's Divining Top's second ability by tapping it, causing you to draw a card and put Sensei's Diving Top from the battlefield onto the top of your library.
2. Activate Glarb by tapping it, causing you to surveil 2, ensuring to put Sensei's Divining Top into your graveyard.
3. Cast Sensei's Divining Top from your graveyard by paying 1 life due to Eye of Duskmantle.
4. Valley Floodcaller and Aetherflux Reservoir trigger.
5. Resolve the Valley Floodcaller trigger, giving Birds, Otters, Frogs and Rats you control +1/+1 until end of turn and untapping them.
6. Resolve the Aetherflux Reservoir trigger, causing you to gain 1 life for each spell you've cast this turn.
7. Repeat.

This clever engine turns Sensei's Divining Top into a self-repeating loop by leveraging Glarb, Calamity's Augur to quietly mill it away, while Eye of Duskmantle steps in to let you cast it straight from the graveyard for a mere 1 life instead of its mana cost. As you continuously recast the Top, Valley Floodcaller keeps your creatures continuously untapping and pumped, and Aetherflux Reservoir tracks the rising spell count to rapidly pad your life total. That accumulated life buffer easily sustains the health costs required to recast the Top over and over until Aetherflux Reservoir can finally unleash 50 damage to eliminate an opponent.