Martin
A monoid in the category of endofunctors
Hyper Beam and its variants are all really good here. Rock Wreaker in particular is an interesting move due to its very limited distribution (Rhyperior and Crustle are the only fully evolved users barring Smeargle (lol)). In particular, Crustle has a very big niche due to its access to Stealth Rock, Spikes and Rock Wreaker making it a force to be reckoned with.
Crustle @ Custap Berry / Hard Stone
Ability: Sturdy
EVs: 252 Spe
Jolly Nature
- Stealth Rock
- Spikes
- Rock Wrecker
- Knock Off / Shell Smash
You are probably confused by Shell Smash being slashed on there, but hear me out. While I understand why people say that setup is bad, I've found that Shell Smash is in general a really cool move to have due to it allowing its user to boost their offenses and speed quickly, which can allow the user to outpace and KO things that they wouldn't otherwise be able to take on. In addition, SD, NP and TG all have uses on various Pokémon due to them also boosting quickly while allowing for a slow/medium-paced momentum grabber with extra power - which Shell Smash does not allow for.
Crustle @ Custap Berry / Hard Stone
Ability: Sturdy
EVs: 252 Spe
Jolly Nature
- Stealth Rock
- Spikes
- Rock Wrecker
- Knock Off / Shell Smash
You are probably confused by Shell Smash being slashed on there, but hear me out. While I understand why people say that setup is bad, I've found that Shell Smash is in general a really cool move to have due to it allowing its user to boost their offenses and speed quickly, which can allow the user to outpace and KO things that they wouldn't otherwise be able to take on. In addition, SD, NP and TG all have uses on various Pokémon due to them also boosting quickly while allowing for a slow/medium-paced momentum grabber with extra power - which Shell Smash does not allow for.