Once Edward Kenway hits the battlefield, you want him to stick as its effect can help fund the mana needed to recast it if it ever does get removed
Djinni Windseer acts as a strong 3/3 Flying creature on the battlefield but also gives you a crucial Scry trigger thanks to the dice rolling ability
0.4 per cent chance: 0.2 per cent per card (5th card probability rate, regular pack) Rainbow Full Art Moltres EX, Rainbow Full Art Machamp EX (Charizard Pack) 0.1 per cent chance: 0.05 per cent per card (4th card, regular pack)
This easily makes it the most expensive Magic card ever printed
Basic advice that Legacy players give each other is typically something along the lines of, "you're Brainstorming wrong," and "never ever Brainstorm on turn one--unless you have to," and "Brainstorm is always too good to cast now." If it seems a little self-contradictory, good, because Brainstorm is a complicated card, and there is a lot to consider each time you cast it, if you want to maximize its potential