one piece trading card booster box OP-12 Legacy of the Master with 6 cards per pack. One Piece Trading Card Game:

How many Game Changers are there

Loxi: Ironically, I think most people will play this for the Cyclonic Rift part of the second bit and just use this as great mill/discard-fodder

Those are some rare cards

If you choose well, Know Evil can essentially be a full turn skip for all three of your opponents, which easily puts it in the upper echelons of power when it comes to Archenemy Schemes in MTG

Since youre taking advantage of your opponents graveyards, its a good idea to help them fill it

In general you want to save the Sidisis Faithful to set up one big turn where you clear their legendary creature and go off, but there is an exception when you have a Rally to spare, either because you have two or because you are just going to beat them down regardless