Milotic @Chesto
-Surf
-Ice Beam
-Facade
-Rest

If you're not willin to breed for another Modest Feebas go with this. It is perfect to compliment his ability: Marvel Scale. Surf for STAB, Ice Beam for Dragons, Fliers, Grass. Facade is the real kicker here. If he/she/it gets a status ailment it will raise it's Defense. The power of Facade doubles, and when you get really low on HP you can just Rest to get rid of it. Chesto brings it back to action and more special sweepin action! He already has high special defense as is, and he'll be fine w/o LS. MC is optional on him, but I suggest this for a good pokemon without too much extra effort. (besides all that effort tryin to get it to evolve!!!)

Hope this was of some help!