Cast Diabolic Revelation by paying at most {9}{B}{B}, searching your library for at most six cards with differing mana values and putting them into your hand.
Move to your combat phase, and deal combat damage to an opponent with Atemsis.
Atemsis triggers, revealing your hand and causing the opponent dealt combat damage to lose the game.

Target opponent loses the game

Atemsis, All-Seeing

Diabolic Revelation

Cast Seasons Past by paying {4}{G}{G}, returning Diabolic Revelation, Walk the Aeons, and any number of cards with different mana costs to your hand and putting Seasons Past on the bottom of your library.
Cast Diabolic Revelation by paying {4}{B}{B}, putting Seasons Past from your library into your hand.
Cast Walk the Aeons by paying {4}{U}{U}, granting you an extra turn.
Repeat each turn.

Combos with "Diabolic Revelation"