Relicanth

Swift Swim
Speed doubles in rain.
Rock Head
Recoil moves have no recoil.
Type Tier
Water / Rock UU
Statistics
Min- Min Max Max+
HP
100
- 341 404 -
Atk
90
194 216 279 306
Def
130
266 296 359 394
SpA
45
113 126 189 207
SpD
65
149 166 229 251
Spe
55
131 146 209 229
Name Item Ability Nature

Choice Band

Choice Band Rock Head Adamant
Moveset EVs
~ Head Smash
~ Waterfall / Aqua Tail
~ Earthquake
~ Double-Edge
12 HP / 252 Atk / 244 Spe

STAB Head Smash with no recoil is very appealing indeed, even more so when coming from an Attack stat that approaches 460. The great thing about this set is that it makes most physical walls think twice about switching in. Skarmory gets 2HKOed by Head Smash, bulky Ground types don't enjoy STAB Water attacks and Earthquake puts a nice dent in Steel types. Waterfall is the more reliable choice for Water STAB, but Relicanth needs as much power as possible so Aqua Tail is recommended. Double-Edge is mostly for Breloom who resists all your other attacks.

Name Item Ability Nature

Sleep Talk

Leftovers / Life Orb Rock Head Adamant
Moveset EVs
~ Rest
~ Sleep Talk
~ Head Smash
~ Waterfall / Aqua Tail / Earthquake
240 HP / 252 Atk / 16 Def

He has high HP and a massive Defense stat so Relicanth is a decent choice for a Sleep Talk set. Leftovers is the obvious choice for something you expect to stick around awhile, but you can use Life Orb for more power as Rest compensates for the 10% recoil and loss of Leftovers. Support from Tyranitar and Hippowdon in the form of Sandstream makes Relicanth much sturdier, as the Special Defense boost helps him take more hits.

Name Item Ability Nature

Rock Polish

Leftovers / Life Orb Rock Head Adamant
Moveset EVs
~ Rock Polish
~ Head Smash
~ Waterfall
~ Earthquake
6 HP / 252 Atk / 252 Spe

Rock Polish boosts Relicanth's poor Speed high enough to attempt a sweep. Waterfall is suggested over Aqua Tail as you may get some luck with the flinch rate. Life Orb gives Relicanth's attacks a little more bite, but Leftovers is still a decent option if you'd prefer healing to power.

Other Options

Relicanth can use Yawn and Stealth Rock to cause and punish switches. Rain Dance works with Swift Swim as an alternative to the Rock Polish set, but it's hard to give up a no recoil Head Smash just for a boost to his Water STAB. Stone Edge can be used in place of Head Smash if you're using Swift Swim.

EVs

Choice Band set should have maxed Attack with an Adamant nature. 244 EVs gives Relicanth 207 Speed, which outruns minimum Speed Suicune. Remaining EVs can go in HP.

Sleep Talking set can also go with max Attack and Adamant. Give him 401 HP with the remaining 16 in Defense.

For the Rock Polish set, Adamant and max Attack are once again the preferred spread. 198 Speed will outrun Aerodactyl and Jolteon, but max is suggested for random Choice Scarf users.

Opinion

Water/Rock is right up there with Bug/Flying as far as piss poor typing goes. It isn't all bad news though, Relicanth has the awesome Head Smash, and unlike Rampardos—the only other Pokémon who can learn this move—he doesn't have to suffer with the 50% recoil. Avoid Grass attacks like the plague and Relicanth should survive long enough to dish out some surprisingly heavy damage.

Counters

Grass types with decent Defense ruin Relicanth's fun. Leafeon, Tangrowth, and Celebi are all good options.

Bronzong walls him quite effectively and can take down Relicanth with Earthquake or Grass Knot.

Poliwrath and Quagsire both resist his Rock attacks and absorb Aqua Tail and Waterfall. Fighting attacks or Earthquakes help finish Relicanth.