Spellbinder + Beacon of Tomorrows + Mystical Tutor

Spellbinder

Beacon of Tomorrows

Mystical Tutor

How it works

1. Cast Beacon of Tomorrows by paying 6, causing you to take an extra turn after this one and shuffle Beacon of Tomorrows into your library.
2. Deal combat damage to an opponent using the creature that has Spellbinder attached.
3. Spellbinder triggers, casting a copy of Mystical Tutor without paying its mana cost.
4. Resolve the copy of Mystical Tutor, searching your library for Beacon of Tomorrows and putting it on top of your library.
5. Move to your next turn, drawing Beacon of Tomorrows during your draw step.
6. Repeat.