If additional cards are not required, Stratos can destroy spells and traps based on how many Hero cards in the player's hand
Slap-on-the-Wrist Nuke: Bruno/Antimony manages to blow out a freaking sun with his Delta Accel Synchro
It's best to start by selling things that you already have around your home
Cosmic Cyclone is comparatively low-impact, but it deserves a mention because it can out floodgates like Anti-Spell Fragrance that straight-out prevent any plays, thus being a game-changer more often than one might expect
The Dominus duo may shift the power of balance between card types at last, especially since they work well with certain archetypes, like Paleozoic and Traptrix
It is a Level Ten, so it requires a bit of investment, but it's worth it to get its effects off