Dauthi Voidwalker | Tethmos High Priest | Lightning Greaves

(and two other cards)

NOTE: This combo fails if you target an opponent that does not have an instant or sorcery card in their library that can target a creature.

During the end step prior to your turn, activate
Grinning Totem by paying ({2} magic symbol) and tapping it, causing you to search an opponent's library for an instant or sorcery card that can target a creature and exile it with the ability to cast it until your next upkeep.
At the beginning of your upkeep,
Grinning Totem triggers, attempting to put the instant or sorcery into its owners graveyard, but instead exiling it with a void counter due to
Dauthi Voidwalker.
Activate
Dauthi Voidwalker by tapping and sacrificing it, causing you to cast the instant or sorcery without paying its mana cost, targeting
Tethmos High Priest.
Tethmos High Priest triggers, returning
Dauthi Voidwalker from your graveyard to the battlefield.
Holding priority, activate
Lightning Greaves' equip ability by paying ({0} magic symbol) , attaching it to
Tethmos High Priest.
Resolve the instant or sorcery spell, causing it to do nothing as
Tethmos High Priest is now an illegal target, and then exile it with a void counter on it due to
Dauthi Voidwalker.
Activate
Lightning Greaves' equip ability by paying ({0} magic symbol) , attaching it to
Dauthi Voidwalker.
Repeat from step 3.