Use Mindslaver's ability targeting an opponent.
Activate Academy Ruins's ability targeting Mindslaver in graveyard.
Pass to opponent's turn.
Pass to your turn and draw Mindslaver.
Play Mindslaver, use it, and target it with Academy Ruins.

You control target opponent on each of their turns

Mindslaver

Academy Ruins

Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Pull from Eternity without paying its mana cost.
Resolve the copy of Pull from Eternity, putting Draco into your graveyard from exile.
Activate Academy Ruins' second ability by paying {1}{U} and tapping it, putting Draco on top of your library from your graveyard.
Move to the next turn.
At the beginning of that turn's upkeep, Timesifter triggers, exiling the top card of each player's library, and causing you to take an extra turn after this one due to exiling the highest mana value card.
Repeat.

Combos with "Academy Ruins"