This is another one of my SI ideas where someone gets isakaied this time in yugioh it is yugioh but you can chose yugioh gx if you want.
In this story instead of powers it be decks 1 at least be but you can chose 2 i guess
Decks
Alien Heroes
In this deck you have monster , spell and trap cards of ben 10 both good and bad guys unless you have a rival from all the series like the first one, alien force, and omniverse except the reboot no just no ok. For example Heatblast is 1700/1600 lv4 fire and a effect pyro monster for all fire monsters on the field gain 200 atk points for each one. For the ultimates it be like this waybig lv 10 light to become ultimate waybig it need the ultramatrix card like how red eyes black dragon need metalmorph to become red eyes black metal dragon got it.
And Alien X lv10 light ritual card and some cards like Atomix lv10 light can only be special summon.
Dragon ball deck
For this deck you have a two spirit partners like Jaden with Winged Kuriboh one good guy and one bad like for example Dbs Broly and Dbz Broly or Hit and Cooler or Goku and Frieza. For Frieza/Cooler forms and Super sayian it be like LV monsters ok but God/Golden you need a spell card and For Ultra Instinct/Ego ritual card with Goku/Vegeta and up to LV 12 because it Ultra Instinct/Ego and There is support cards for characters like for Goku spirit bomb, Instant Transmisson and kamehameha.
Naruto and Bleach decks
Same as Dragon Ball
Smash Bros and Kingdom Deck
It will be everything with this two with up to Fusion and Ritual and LV to Pendulum to Link and everything else they add to Yugioh Next.