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
Card Name Lulu, Stern Guardian Mana Cost Type Legendary Creature Human Wizard Rarity Rare rules Text Whenever an opponent attacks you, choose target creature attacking you
This easily makes it the most expensive Magic card ever printed
Commander is a vast, powerful, and ever-changing format, so it's crucial to stay on top of card bans