Warp Through Time

(You may cast a legendary sorcery only if you control
a legendary creature or planeswalker.)
Choose 1 or both. If you choose both, at the
beginning of the next turn's end step, you lose
the game.
• Look at the top 3 cards of your library. You
may cast an instant or sorcery spell you find
there without paying it's mana cost.
• Take an extra turn after this one.