Temporal Mastery by paying ({5} magic symbol) ({U} magic symbol) ({U} magic symbol) , causing you to take an extra turn after this one and exile
Temporal Mastery.
Activate
Isochron Scepter by paying ({2} magic symbol) and tapping it, casting a copy of
Pull from Eternity without paying its mana cost.
Resolve
Pull from Eternity, putting
Temporal Mastery into your graveyard from exile.
Move to your next turn.
Activate
Dralnu by tapping it, giving
Temporal Mastery flashback until end of turn.
Cast
Temporal Mastery from your graveyard by paying ({5} magic symbol) ({U} magic symbol) ({U} magic symbol) , causing you to take an extra turn after this one and exile