Fool's Demise + Great Whale + Altar of Dementia Combo

All permanents on the battlefield.

Fool's Demise attached to Great Whale. You control up to seven lands that can tap to produce at least .

Activate up to seven lands by tapping them, adding at least .

Activate Altar of Dementia by sacrificing Great Whale.

Fool's Demise's first and second abilities trigger.

Resolve the first Fool's Demise trigger, returning Great Whale from your graveyard to the battlefield.

When Great Whale enters the battlefield, it triggers, untapping up to seven lands.

Resolve the second Fool's Demise trigger, returning Fool's Demise to your hand from your graveyard.

Resolve the Altar of Dementia ability from step 2, causing target player to mill cards equal to Great Whale's power.

Cast Fool's Demise by paying , targeting Great Whale.

Repeat.

If the seven lands can tap to produce at least , this combo nets infinite mana.

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite mana lands you control can produce

Infinite mill

Infinite creature sacrifice triggers

Infinite self-mill

Infinite storm count

Infinite untap of lands you control