The best way of stopping Regidrago is to simply focus on removing its attackers from the game, but honestly, with all the pressure that Regidrago applies, easier on paper than in reality
This is only for characters, not the other card types
Flayer here threatens a creature and turns it into a monster to beat down upon your opponent for 10 mana, and leaves behind a 10/10 annilhator 2, wtih trample
Pir, Imaginative Rascal + Toothy, Imaginary Friend Pir, Imaginative Rascal is one of the few counters-multiplier legendary creatures
If you dont have a way to untap it, you still have to wait until next turn to use it, transforming it back
The closest the Yubel series ever came to being a decent deck was during the release of the Fire King archetypes support cards, most notably Fire King Island, which would allow players to destroy cards in their hands in order to search for another Fire King card