Below, well cover which cards are Forbidden, Limited, and Semi-Limited in Yu-Gi-Oh Master Duel, so that you know which cards you can use when constructing a meta deck
Obelisk would -Gold sarc: deck doesn't really need it -Ojamuscle: not worth it -Ojama red: 1 or max 2 copies are enough If it's not meant to be a serious deck, you can keep these, but you should probably remove -polymerization -de-fusion -ojama king -ojama knight Things you can add +Tri-Wight: instant Number 21 Dark Mist / gachi +Number 21 dark mist +Creature Swap: you can even main 3
But as Pioneer's own card pool grows larger, Standard cards have a harder time shining there once they rotate
Theres a reason cEDH decks pack so much fast mana, and its not to show off
Because Identity Thief is not a double-faced card or meld card, it wont be able to transform or meld