However you do it you have to have a good plan going on, which piques my interest
I honestly had to significantly cut down my initial list here, because I kept finding more that I thought were great
However, they do buy you a couple of turns before opponents make their big attack
I dont mind putting it in two-color decks either, as long as it wont cause any mana issues, like casting Turn 2 Captain Storm, Cosmium Raider, for instance
(2022-12-08) "Flashback [cost]" means "You may cast this card from your graveyard by paying [cost] rather than paying its mana cost" and "If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack." (2021-03-19) You must still follow any timing restrictions and permissions, including those based on the card's type