I've had Mewtwo come in handy against Seismitoad-EX decks in particular
During either player's Main Phase or Battle Phase: You can send this face-up card from your Spell & Trap Zone to the Graveyard
[ Pendulum Effect ] If you have no card in your other Pendulum Zone: You can destroy this card, and if you do, shuffle 1 face-up Spellcaster Pendulum Monster from your Extra Deck into your Main Deck, except "Mythical Beast Bashilisk", then draw 1 card
Fury of Fire X SPELL (This card is always treated as a "Salamangreat" card.) Special Summon up to 2 "Salamangreat" monsters with different names from your hand and/or GY in Defense Position, but their effects are negated, also, for the rest of this turn after this card resolves, you can only Special Summon from the Extra Deck once
And when sealed product becomes affordable again, you can absolutely bet that the PSA 10s are going to see a massive pullback in value