({3} magic symbol) ({U} magic symbol) each turn available.
Steps
Activate
Isochron Scepter by paying ({2} magic symbol) 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} magic symbol) ({U} magic symbol) 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.