So I've decided to make a little thread on
Brainstorm since JTMS is now legal in modern. Even in legacy, where both cards are legal, many people use
Brainstorm incorrectly.
So the theory is to use
Preordain Ponder etc before
brainstorm, to get the most out of it. The part most people mess up is when to use it though. 1st and foremost, use it on
your turn. A lot of people are used to casting instants on the end step, but this is incorrect for multiple reasons.
First, it's cost is so low that leaving up the one mana is usually whatever. Second, in theory you put your worst 2 cards back. Since KTMS is free to use and is EVERY TURN, you can use it slightly differently. In legacy half the lands are fetches, practically, so you use them to shuffle away your worst cards. But since you dont have to pay for it with Jace, you can also use effects like
Ponder to get a similar effect, with less cost than if you had cast a
brainstorm.
So basically the main points are: main phase, shuffle effect. Sorry if I kinda ramble, I don't write many threads.
hope I helped!