Is it just me, or is Sap Sipper Miltank the best mon in NU right now?
She hard counters Amoonguss, which is ridiculously useful, that base 100 speed is godly in this meta, and STAB Double-Edge OHKOs seemingly everything, even with Jolly, and while having enough bulk to withstand a Cinccino Tail Slap (and if you switch in on Bullet Seed, well!)
Plus, she can heal and cleric on the same set, even while playing offensively. I've been using a hybrid attacker/healer set and it is easily the single most indispensable member of my team. Thing averages 2 kills a game, at least.