Isochron Scepter + Vampiric Tutor + Beacon of Tomorrows + Palace Siege

Isochron Scepter

Vampiric Tutor

Beacon of Tomorrows

Palace Siege

How it works

1. Cast Beacon of Tomorrows by paying 6, causing you to get an extra turn after this one and shuffle it into your library.
2. Activate Isochron Scepter by paying 2 and tapping it, casting a copy of Vampiric Tutor without paying its mana cost.
3. Resolve the copy of Vampiric Tutor, searching your library for Beacon of Tomorrows, then shuffling your library and putting Beacon of Tomorrows on top of it, and causing you to lose 2 life.
4. Move to your next turn.
5. At the beginning of your upkeep, Palace Siege triggers, causing each opponent to lose 2 life and you to gain two life.
6. At the beginning of your draw step, you will draw Beacon of Tomorrows from the top of your library.
7. Repeat.