I've been using a Mantine in one of my recent in-game playthroughs, and I can't help but wonder what he would have been like if he'd gotten some actual support moves. Like say, Whirlwind, Roost, Heal Bell and Dual Screens. I reckon he could make a nice alternative to Slowking in RU, especially with all the Escavalier now running around out there, which makes the old Tangrowth/Slowking cores a bit of a liability. Being one of the few bulky waters that can beat down Sceptile would be more of a perk with the ability to Roost off the damage. Being able to take anything Nasty Room Cofagrigus can throw at it, and PHaze it out is quite a boon too.