Isolde on summon adds a "Heroic" monster to your hand, which will be discarded by Loading
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We can discard Psychic Energy to use with Psychic Embrace or Mewtwo V-UNION pieces for a virtually free cost
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
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