You need to use your mana effectively, but it can be a bomb creature for a lot of decks
Then add, from the Deck to your hand, 1 monster that has exactly 1 of the same Type, Attribute, Level, ATK or DEF as the monster chosen from your Deck, and banish the card chosen from the Deck face-down
However, if a monster inflicts battle damage via a direct attack while Spaceway Octobypass is on the field, that monster's controller has to give control of it to the turn player's opponent
Services like PSA and BGS authenticate the card as part of the grading process
If you want it to be a bit more sturdy, you might need to forgo the Diamond Dude engine entirely and add some disruption traps like the Solemns or protection cards like Safe Zone
In recent years there have been numerous reports of Japanese fans opening booster boxes, only to find the booster packs contain no chase cards