It really needs to go imo. As others said, Delta hit it spot on. Deoxys-S is becoming increasingly popular and with good reason, it's guaranteed to get up at least one of the screens and then stealth rock. Usually both screens, and with a screen up for 8 turns (when using light clay) You can do whatever you want for about 7 turns, and after you get in the shell smash and what not with Gorebyss, you usually have at least 1-3 turns left of screens up.
The scary part is that Gorebyss can sweep all by herself, she doesn't HAVE to baton pass. so that ice beam you were planning on firing when the Landorus comes in is mute if Gorebyss stays in.
Espeon is manageable because he's slower and frailer than Deoxys-S and he can't set up hazards so when he's the dual screener you can at least stop him, but Deoxys is guarenteed to get that screen up which makes SmashPass teams SO much better. and if he can get hazzards up, that's good for him!
The only reason why it'd be bad for him to go is because he's guaranteed to get in that stealth rock to neuter opposing Volcaronas and Dragonites, but if you're team needs SR THAT bad, then Aerodactly is always an option. Even if he isn't as good as Deoxys-S
Complete with gravy, stuffing, mash potatoes, sweet potatoes, cream corn, fruitcake, and mincemeat pie
Favorite OU pokemon: Reuniclus. I don't care if Scizor shuts him down, he's still good.
Peak on the NU tier: 14 / 1734
Favorite NU mon to use: Torterra