Moreover, Thoughtseize and Fatal Push provide additional versatility after sideboard
You can only use each effect of Myutant GB-88 once per turn
Note that this seems to be only for this kind of effect, where Performapal Odd-Eyes Dissolver goes a different route and instead says: "During your Main Phase: You can Fusion Summon 1 Fusion Monster from your Extra Deck, using this card you control as Fusion Material, as well as other monsters you control or cards in your Pendulum Zones." Example of previous wording: "Immediately after this effect resolves, Synchro Summon using this card you control." Example of new wording: "Immediately after this effect resolves, Synchro Summon 1 Synchro Monster, using materials you control, including this card." The Synchro Material requirements are slightly changed, now being similar to Link Monsters in that they state "1+ non-Tuner monsters"
Japan Post will release a special product named the Pokemon Stamp Box - Pokemon Card Game Beauty Looking Back, Moon Goose
But we'll talk about it if that's going to happen
Speaking of Flare of Fortitude, its actually not bad