The Last Ronin's Technique A four-mana white instant spell might seem like an easy pass at first, but the new sneak mechanic and its inclusion on this card take it right to the forefront of the mono-white aggro meta
But it draws so many cards
It adds tutor effects to the look at the top X cards in your library, you may reveal a card (land, nonland, etc.) and put it into your hand effect
Once you get to attack with it, it enables you to leverage your yard as a second hand
Time Vault might be the best combo piece in the game, going infinite with the kitchen sink
As Flamewar, Streetwise Operative, it gains menace and deathtouch, making it harder to block and as well as more costly to throw creatures in front of it