Here's a cool Manaphy set I've been using. Cromanaphy isn't exactly original but I've noticed that the EV spread everyone is using (including the smogon dex) is wrong.
Manaphy @ Leftovers / Damp Rock
Ability: Hydration
EVs: 248 HP / 100 Def / 160 Spe
Bold Nature
- Scald
- Calm Mind
- Rest
- Rain Dance
Honestly what I'd consider to be the greatest strength in this set is the delay opponents have in reacting to it. Many players have trouble realizing what the set is, and that gives even more of an opportunity to set up and sweep.
This set is designed to beat stall and destroy sand offense's momentum. Most cromanaphys i've seen are using like 248 def which is stupid because it's extremely easy to revenge kill with strong physical threats like medicham and heracross that are becoming even more prevalent.
With 160 speed EVS, manaphy outspeeds adamant drill when you rain dance the sand away. Rain dance obviously can annihilate a player's win condition, and rain can mitigate TTar's 1.5 spdef boost in rain in addition to scald's power boost.
With 1 turn recovery in rest, Manaphy essentially has the ability to set up on
anything that stall uses barring amoongus with clear smog (venusaur can only beat it 1v1 with a crit). Manaphy's #1 switch in Chansey is complete set up bait, and objectively loses 1v1 due to scald's imminent burn.
Damage calculator is down for some reason, will post some when it comes back to show how hilariously easy it is to set manaphy up with Calm minds (Will post more later)
252 SpA Life Orb Latios Psyshock vs. 252 HP / 100+ Def Manaphy: 142-168 (35.1 - 41.5%) -- 70.3% chance to 3HKO after Leftovers recovery
Gives time to set up a rain dance and rest HP back, while chipping away at Latios
+1 0 SpA Manaphy Scald vs. 0 HP / 252+ SpD Assault Vest Tyranitar in Rain: 188-224 (55.1 - 65.6%) -- guaranteed 2HKO
252 Atk Terrakion Close Combat vs. 252 HP / 100+ Def Manaphy: 160-190 (39.6 - 47%) -- guaranteed 3HKO after Leftovers recovery
252+ SpA Mega Venusaur Giga Drain vs. +1 252 HP / 0 SpD Manaphy: 174-206 (43 - 50.9%) -- guaranteed 3HKO after Leftovers recovery
252 SpA Life Orb Sheer Force Landorus Earth Power vs. +1 252 HP / 0 SpD Manaphy: 153-181 (37.8 - 44.8%) -- guaranteed 3HKO after Leftovers recovery