If you want to avoid some confusion, I suggest saying Robot Deck for artifact decks (or not using this term), and robot typal for the creature type
They introduced the idea that how a card looks the art treatment, the texture, the rarity symbol could be just as important as whats printed on it
Millennium Ankh X SPELL Show 5 "Forbidden One" Monster Cards from your hand, Deck, and/or face-up field, then Special Summon 1 "The Unstoppable Exodia Incarnate" from your Extra Deck, then shuffle the face-up Monster Cards you control into the Deck, except "Exodia" Monster Cards whose original Levels are 10 or higher, and "Millennium" Monster Cards, also you cannot Summon for the rest of this turn
It's not longer part of Standard, but still has a place in older formats
When building a tutor-based deck, find the balance between having enough tutor cards