Outlaws of Thunder Junction introduced outlaws
Fast mana is everywhere, and getting to borrow your opponents Sol Rings and Mana Crypts to cast your own spells feels amazing every time
in other cases, when a creature is put onto the battlefield attacking, that creature's controller chooses which player, planeswalker, or battle it's attacking
Thousand-Year Elixir lets you tap creatures to use their abilities even when they have summoning sickness as if they have haste
If youre playing against the Baron, keep in mind its just a 3/3 vanilla creature outside of counting down the doom counterif you can kill it before it gets to one, the doom counter resets back to five when the Baron comes out again
Probably so we can have a deck called Blue Steel. Each ink color has its own set of signature attributes that lend themselves to different strategies