even in this example though, it's not randomness, just unpredictability. we're still only a month into the meta so it makes perfect sense that we're all still getting a feel for when your opponent is going to tera. the point of putting tera flying or fairy on roaring moon is exactly the same reason to EV it that way - to survive a would-be revenge kill. if they played well enough to save their tera for that moment, that's not randomness, it's a successful gameplan.ok but lets use a different example... one that i love using... u just got revenge killed by roaring moon.... u can go into breloom to force it out... but that may not work cuz
1. it may be bulky enough to live... ive seen slight hp invested roaring moon esp the jaw lock variants surviving a CB mach punch... ok that is a acknowledgeable risk but you follow through with it because you are confident it can kill
2. It can tera into flying, a neutral type like fire, but ive seen fairy even being used a bit to setup on dragapult and other dragons, so you risk just losing breloom which may be valuable.... if its not valuable then its a risk you took... but on a game to game basis this may vary esp on offensive teams against other offense
3. You switch out predicting the tera.... that can work and if the opponent gets baited... good for you you did it! but what if the opponent either doesnt want to tera or predicts your switch and nuke you or dragon dances up again because they knew you would switch... and from there u basically lose the game...
I've played a bunch of games over the last few days where gholdengo clicks make it rain instead of shadow ball on a skeledirge, predicting it to tera fairy. players are learning how each mon tends to tera and factoring it into their decision-making. that's a sign of adaptation and a meta developing.