The gimmick here is that you can use Bygone Colossus to automatically station most spacecraft in one go (as most of them require nine or fewer charge counters) for just 3 mana, then maybe you have a 9/9 to play much later on if you ever get to it
This also means that if you tear in half a blue core fake card it will have a blue layer within like genuine cards (black core fake will show black layer inside)
Card Set(s) Included in Online Regional Participation Pack Vol.1 CARD VIEW OP02-098 | R | CHARACTER Koby Attribute Strike Block icon 1 Effect [On Play] You may trash 1 card from your hand: K.O
There are also special holo patterns on individual cards, half deck cards, promos etc here are some examples from the criteria you mentioned
Legality depends on the tournament format -- Rakdos Shred-Freak can be legal in some formats and banned or restricted in others
Legendary Creature - Mutant Insect Commander (CTRL to add secondary) Finisher Finisher (CTRL to add secondary) Mill Mill (CTRL to add secondary) Recursion Mimeoplasm, Revered One As Mimeoplasm enters, exile up to X creature cards from your graveyard