Spellbinder attached to a creature you control.The creature with Spellbinder attached does not have summoning sickness, and cannot be blocked by an opponent.
Cast Beacon of Tomorrows by paying ({6} magic symbol) ({U} magic symbol) ({U} magic symbol) , causing you to take an extra turn after this one and shuffle Beacon of Tomorrows into your library.
Deal combat damage to an opponent using the creature that has Spellbinder attached.
Spellbinder triggers, casting a copy of Mystical Tutor without paying its mana cost.
Resolve the copy of Mystical Tutor, searching your library for Beacon of Tomorrows and putting it on top of your library.
Move to your next turn, drawing Beacon of Tomorrows during your draw step.