I agree with you ! Even the 20 cards deck is broken with LEVEL AUGMENTATION and Sunsaga 2nd turn nuking your field !!! What goes for the 30 card 🔥 that doesn't even let u play !
People always have to ruin a good thing by exploiting broken combos. I agree either nerf Spell Specialist, or hit grass which is sadly unfair to grass decks that aren't broken. 20 card Shiranui is fine, and easy enough to counter with different traps and card effects.