If both players have a Trap Card that can be activated at the same timing, then the non-turn player chooses whether to activate a Trap first, and if they do not, then the turn player can activate a Trap
Many of these fusions require #147: "Monster Egg" as a "catalyst"
Mythology Gag: Number 100: Numeron Dragon was created in the anime through a duel in which Number 62: Galaxy-Eyes Prime Photon Dragon and Number C107: Neo Galaxy-Eyes Techyon Dragon clashed with each other
Even Kaladesh and the more recent Kamigawa: Neon Dynasty sets, more futuristic in their aesthetic, still have a magical tinge on the weaponry and robots portrayed in the art
And goodness knows that most games of Magic don't involve morph anyway, so Break Open has absolutely no effect whatsoever
Many of these early cards were printed in smaller numbers, and many have been damaged or lost over decades of play, so surviving mint copies are rare