1) Negate its effects
Forbidden Chalice
Fiendish Chain
Number 25 / Photon Bouncer
Number 45 / Cursed Javelin
Gorgonic Guardian
2) Banish it
Karma Cut
Dimensional Prison
Dark Core
Chain Disappearance
Number 70
3) Return it to the extra deck
Jelly Cannon
Drowning Mirror Force
Compulsory Escape Device
Ouroboros
Ptolemy M7
Brionac
Cyber Slash
4) Tribute it
Lava Golem
Santa Claws
Volcanic Queen
5) Take control of it
Enemy Controller
Galaxy Eyes Cipher
6) Other ways
Herald of the Abyss
Samurai Destroyer
7) Non-generic cards
Almost any decent archetype has a way to beat this
Feel free to add more cards in the replies here. I tried to keep the list as generic as possible but I still might have missed a few cards.
Yeah, don't have any of those cards in my deck, and shouldn't have to just for once in a blue moon coming across this card. It's kinda bull crap that a card can be this busted. But then again so many decks right now are OP with the abilities to destroy/banish all your spell/traps/monsters in one turn and attack you for game.
But most of those cards are good against a bunch decks not only against bloom diva. Brionac has a place in most synchro decks, malevolent sin in almost all deck capable of xyz. Crackdown, compulsory are used by meta decks. Even enemy controller had a resurgence in the meta