General With Ho-Oh gaining popularity and the buff to Will-O-Wisp, Rock Arceus has no trouble carving out a niche for itself. As offensive typing goes, Rock is one of the best around, hitting 4 types for super effective damage with only 3 resisting and nothing being immune. The lack of immunities increases its support capabilities, meaning it has space for 2 utility moves since it doesn't need to run 2 attacks. However, Rock Arceus has its faults. Groudon and Kyogre are commonly used and very dangerous to it. Zekrom's popularity has also given rise to a number of bulky Ground types, which makes Rock Arceus's job even harder. And while Rock is one of the best offensive types, defensively it's one of the worst, with a bad 5 weaknesses to several common types like Water and Ground. Support Arceus @ Stone Plate Trait: Multitype Timid Nature (+Spd -Atk) EV: 248 HP / 8 SAtk / 252 Spd Will-O-Wisp Judgment Recover Defog / Roar / Perish Song This set is designed to aid your team by spreading burns around. Will-O-Wisp is the chosen status move, since (apart from Blaziken) Fire types pretty much never switch into it. Judgment prevents Arceus from being Taunt bait, and still does decent damage to anything not resisting it thanks to Arceus's great 120 base Special Attack. Recover is a staple on any support Arceus to keep it alive as long as possible. Because nothing is immune to Judgment, Rock Arceus has space for another utility move. Defog can clear the field for your teammates, while Roar and Perish Song prevent Arcues being set up fodder. 8 Special Attack EVs guarantee a OHKO on 248/0 Ho-Oh with Judgment. Max Speed allows it to tie with other Arceus formes. The rest is invested in HP for extra bulk. Other Options If you have a plan for the bulky Ground types like Groudon and Landorus-T, Rock Arceus can run its old offensive sets. A Swords Dance set with Stone Edge and Earthquake is viable, and while relying on a 80% accurate STAB is annoying, it is one of the few physical attackers that can beat Skarmory. You can also run various Calm Mind sets, either MonoAttacker to break stall or an all out special sweeper set, although it faces competition for a defensive one by Fairy Arceus who has better defensive typing and Electric Arceus for an offensive one, who has 4 less weaknesses and BoltBeam. Stealth Rock can be used if nothing else on your team can set it up, but typically phazing and Defogging are more important. If you'd prefer to have more bulk, you could drop the Speed down to 96 to outrun max speed Palkia, and then dump the other 160 EVs into either defense stat. Thunder Wave and Toxic both have their merits, but Will-O-Wisp is typically better on Rock Arceus: Ground and Steel types will switch into it while Fire types won't. Checks and Counters Mega Mewtwo X outruns and OHKOs with Low Kick, and even when burnt can still 2HKO. Blaziken is immune to burns and can shatter Rock Arceus with a STAB High Jump Kick. Arceus formes with a super effective STAB against Rock can normally win if running boosting sets. Special Attacking Steel, Fighting and Ground can set up in its face while taking minuscule damage from Judgment and crushing it with their own Judgments. Kyogre can drown Rock Arceus with its Rain boosted Super Effective STABs while taking little from Judgment due to its 140 base Special Defence. Groudon and Excadrill can 2HKO with their respective Earthquakes, but both will hate a burn. Blissey, Ferrothorn and defensive Dialga can cripple twith Toxic while taking minuscule damage from Judgment and not minding a burn - however, Ferrothorn will eventually fall due to its lack of reliable recovery.