X is the converted mana cost of that card
During the End Phase, if this card is in the GY because it was destroyed in your Monster Zone by an opponent's card and sent there this turn: Special Summon this card from your GY, then, you can destroy cards your opponent controls, up to the number of face-up Spells/Traps you control with different names
UR Ultra Rare Diffusion Wave-Motion X SPELL (This card is not treated as a "Fusion" card.) If your opponent controls a monster: Pay 1000 LP, then target 1 Level 7 or higher Spellcaster monster you control
Jigabyte seems like the best one, which you could run over your third Kagetokage, considering it can be NSd, and Nefarious is neat as well
Relinquished is hard to get rid of once it's on the field, allowing for control strategies to shine during Goat Format
Pokmon GX cards are very similar to Pokmon EX cards in both gameplay and appearance