Tera, while it's fun and only sometimes feels egregious.... I think it will go. If it doesn't, once NatDex comes, it'll get like a dozen+ old OU mons banned. We've already seeing people rally against Dragapult because it can now use physical Ghost STAB. The options with Tera are gonna be endless and many strong pokemon will find ways to defeat their counters or push their game-plans over the edge. Every sweeper that had limited options to get revenge-killed can now reduce them to near 0 (and you cant even be certain which one it's gonna be).
Not really looking forward to seeing pokemon like Heatran, Kartana, Zeraora and Lele get banned down the line to maintain that mechanic. Even now it could claim Dragapult, Chi-Yu and Chien-Pao in the short/mid-term. Pokemon that would be perfectly manageable at face value, without Tera.
Also I think Palafin would not have been banned if it wasn't for Tera, he had a solid list of checks and counters but it was GG if he had the way out from yours, like Tera steel on Amogus or Tera-Water vs a revenge killer.
The other 3, Fluttermane, Houndstone and Iron Bundle; would still probably be broken without Tera since even their base types had limited counter play. Though in a future world with National Dex and no Tera then maybe Bundle could be manageable.
Not really looking forward to seeing pokemon like Heatran, Kartana, Zeraora and Lele get banned down the line to maintain that mechanic. Even now it could claim Dragapult, Chi-Yu and Chien-Pao in the short/mid-term. Pokemon that would be perfectly manageable at face value, without Tera.
Also I think Palafin would not have been banned if it wasn't for Tera, he had a solid list of checks and counters but it was GG if he had the way out from yours, like Tera steel on Amogus or Tera-Water vs a revenge killer.
The other 3, Fluttermane, Houndstone and Iron Bundle; would still probably be broken without Tera since even their base types had limited counter play. Though in a future world with National Dex and no Tera then maybe Bundle could be manageable.