Terastal (Tera) is fine. Very fun, and certainly not "broken". Upon transforming, a Pokemon gains these effects:
- The Pokemon's Type becomes its Tera Type. Pokemon with 2 Types become a Pokemon with 1 Type, that Type being its Tera Type. (Example: Charizard with Tera: Fire becomes a pure Fire-Type Pokemon, like Charmander. Charizard with Tera: Dragon becomes a pure Dragon-Type.)
- The Pokemon keeps all STAB boosts from its original Type(s). This can allow a Pokemon with 2 Types to get STAB boost on 3 Types. (Example: A Charizard with Tera: Grass that has transformed into a pure Grass-Type now gets STAB on its Fire, Flying AND Grass moves.)
ONLY IF a Pokemon Terastals into 1 of its
original Types, it gains this additional effect:
- 33% (1.33x) damage boost to its moves of that Type only. This damage boost stacks with STAB's 50% (1.5x) damage boost, effectively making STAB boost the damage of your moves by 100% (2x). (Example: A Charizard with Tera: Fire gets a 33% damage boost to its Fire moves, in addition to STAB's 50% damage boost. Its Flying moves DO NOT get an additional 33% boost, as the Charizard in this example is not Tera: Flying.)
In my opinion, Terastal is fine. You either get a free Life Orb boost (33%) OR you can change your Pokemon into a completely new Type, which has all sorts of uses (and is the type of fun stuff previously exclusive to Other Metagames). Terastal's 33% boost DOES stack with damage-boosting hold items (effectively letting a Pokemon hold 2 Life Orbs lol), but I'm willing to play a Generation with this mechanic. Sounds fun. Also, Adaptability has been doing the exact same thing for years, and no one has been clamoring for the banning of Crawdaunt/Porygon-Z. Also, there is counterplay. The extreme 2x STAB boost is only for moves of 1 Type, so if you are staring down a Fire-Type that Tera'd into a Fire-Type, maybe go into something that resists (or is immune to) Fire attacks lol.
Anyway, there is a new move called "Tera Blast". To me, this is the only thing that actually needs to be banned. It's Hidden Power...with effectively 120 BP after STAB (lol), and every Pokemon can learn it. Regieleki and Spectrier are the go-to examples of Pokemon who should never have access to Hidden Power-like moves (lol), but in general, every Pokemon should not have access to a 120 BP attack of any Type they desire. You're basically playing Hackmons at that point. The original Hidden Power was only 70/60 BP for a reason.
Name: Tera Blast
Type: Normal
Category: Special
80 Power, 100% Accuracy
Description: If the user has Terastallized, it unleashes energy of its Tera Type. This move inflicts damage using the Attack or Sp. Atk stat—whichever is higher for the user. (
"Don't worry, Butterfree would be able to OHKO Heatran with Tera Blast [Ground] even without the unnecessary Photon Geyser effect" ~zakurenai)
Leave Terastal alone lol