>>44183240New type is Radiant type.
No pokemon are retconned to be this type, although Arcues gets a form for it (Silvally can suck it!), and Eevee gets an evolution for it (But it gets a shitty Flareon-tier stat spread and a useless ability to keep it balanced). Otherwise it is exclusive exclusive to a single legendary pokemon meant to be purposefully overpowered and difficult to fight. The Eevee is the only pleb-mon to ever get th typing and after this it is never used again, no matter how much people complain.
Weak to: Ice, Bug, Psychic
Resists: Normal, Fire, Grass, Water, Flying, Dragon, Ghost, Fighting, Ground
Immune to: Rock, Steel, Fairy
Moves are NVE Against: Nothing. No one can resist it
Moves are SE against: Rock, Steel, Fairy, Ghost, Dragon
Immune to Radiant moves: No one. It is unresistable.
It is purposefully overpowered and there's no easy way to fight it. It is meant to be never used and is less of a new type the way Fairy is where you keep getting new Fairy type pokemon and more of a way to have a powerful boss battles that resists or is immune to a wide variety of types. Also, never, ever make any dual typed Radiant pokemon. That's a big no-no. In fact, it sohuld never be used outside of the context of the Arceus plate, the legendary boss battle, and the Eevee.