Krookodile @ Leftovers
Ability: Intimidate
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Stealth Rock
- Knock Off
- Earthquake
- Toxic
Krookodile + Roserade form a pretty neat hazards combo, Krook being able to pressure a lot of common removers with its stabs and Toxic, while acting as an offensive check to Aegislash, Jirachi, Nihilego and Tentacruel that can all bother Rose. Bulky Krook with (a lot of) HP investment is worth considering, since it makes it more reliable at checking the aforementioned, and overall gives it more defensive presence and ability to soft check a bunch of other threats.
In return, Roserade can Spikes on a bunch of krook switch-ins, notably bullying the regen grasses, rotom wash and other waters depending on your investment (full hp/even fatter variants are better in that regard).
The two together are great at making progress since our removals arent great and can lose to either, and both bring an insane amount of utility in only two slots.
...but the buzzer is the superior rose partner cant lie