What it does
Sword of Ruin drops every other Pokémon on the field — both yours and the opponent's — to ×0.75 Defense. That translates directly to a ×1.333 multiplier on incoming physical damage for all affected targets. The effect snaps on the moment Chien-Pao switches in and vanishes the instant it leaves. It costs no turns, cannot be blocked, and is not a stat-stage change — so Defiant and Competitive do not trigger.
Worked numbers: A typical bulky wall sits around 150 Defense at Lv50. Sword of Ruin pulls that down to an effective 112 — roughly the Defense of a mid-tier threat, not a wall. A physical attacker that was landing around 55–60% against that wall is now touching 70–80%, pushing a previously unreliable 2HKO into clean range. This isn't a flat +1 attack-stage boost on your end; it's the opponent's defensive floor collapsing. In a format where damage rolls sit in the 85–100% window and a single point of chip can decide who finishes first, that gap matters a lot.
The effect cannot be cleared by Haze or Clear Smog — it isn't a stage change. The only ways to end it are knocking out Chien-Pao or forcing it out.
Who runs it
Sword of Ruin is Chien-Pao's exclusive ability, but the biggest winners are usually its partners.
Incineroar: Fake Out buys a free pressure turn; the follow-up Flare Blitz benefits directly from the Defense drop. Incineroar's raw Attack is respectable but not dominant — it often needs external help to punch through high-Defense targets like Assault Vest Steel-types or Rock-types. Sword of Ruin is that help, delivered for free.
Landorus (Therian Forme): Earthquake at 100 base power struggles to 2HKO walls like Hippowdon (118 Defense) without support. Sword of Ruin compresses Hippowdon's effective Defense to roughly 88 — a chunk of the "didn't quite get there" problems disappear. In doubles, Earthquake hitting multiple targets means the Defense reduction pays off twice over on the same turn, though keep in mind the spread ×0.75 modifier is already baked into the damage, not stacked on top of Sword of Ruin's ×0.75.
Physical Mega Evolution users (triggered via Omni Ring or Mega Stone): Each team gets one Mega slot. That Pokémon already costs you flexibility; pairing it with Sword of Ruin means you're extracting extra output from an already-committed resource, with no additional cost. Physically-oriented Mega forms in particular see their effective damage ceiling jump without touching their moveset.
Important caveat: Sword of Ruin applies to your own non-Chien-Pao teammates too. Physically fragile support Pokémon — redirect users, follow-me holders — take ×1.333 from the opponent's physical moves while Chien-Pao is on field. Factor this into team construction before assuming every partner benefits.
How to use it
Singles — turn pattern: Lead or pivot in Chien-Pao and immediately threaten with Icicle Crash or Sacred Sword. The opponent faces two bad options: bring in a special attacker to answer it (bypassing the Defense drop), which concedes their original physical wall's position; or leave the wall in, where its numerical advantage is now meaningfully reduced and sustain plays become shakier.
The decision tree in practice: opponent switches to a bulky wall → ask whether that wall's Sp. Def is higher than its (now-compressed) Defense → if yes, pull Chien-Pao back and send in a special attacker; if no, stay in and use Sacred Sword to bypass any stat-stage boosts the wall may have accumulated. Keeping Chien-Pao alive to rotate back in is usually more valuable than burning it for one KO.
Doubles — turn pattern: The goal on turn one is simple: get Chien-Pao and a physical partner on field at the same time and let the partner immediately attack. Do not spend a setup turn with the partner. A common inefficiency is having the partner use Fake Out while Chien-Pao uses a non-damaging move — you've wasted the first turn of Sword of Ruin on the partner's half of the field. Better: Chien-Pao attacks, partner uses Fake Out, and the Defense shred applies to the one free target that didn't get flinched.
Earthquake interaction: In doubles, Earthquake hits all non-Flying, non-Levitate Pokémon on the field, including your own partner. Sword of Ruin's ×0.75 Defense applies to that partner too. Confirm friendly damage estimates before committing to the spread — it can backfire badly if your partner is already low.
Tips & strategy
The switch-in threat: Because Sword of Ruin toggles on and off with Chien-Pao's presence, it functions as a held-in-hand pressure card. A wall sitting comfortably? Switch Chien-Pao in. Even if the opponent pivots out, the threat that Chien-Pao might come back forces them to keep a dedicated answer available. At Team Preview, opponents already know this card exists and must plan their physical sponge around it before the match begins — that's a win you get for free before turn one.
Stacking Ruin abilities: Ting-Lu's Vessel of Ruin (all other Pokémon's Sp. Atk ×0.75) and Wo-Chien's Tablets of Ruin (all other Pokémon's Atk ×0.75) stack independently with Sword of Ruin. But watch the interaction: Tablets of Ruin suppresses the Attack of every other Pokémon, including Chien-Pao when it's on field alongside Wo-Chien. A dual-Ruin team that runs both of them together may be netting zero or negative damage from the combination depending on which attacker is actually dealing the damage. Do the math, don't just assume double Ruin equals double pressure.
Common beginner mistake — autopsy: Players read "Sword of Ruin" and assume it boosts Chien-Pao's own offensive output. It doesn't. The holder is immune to its own ability — Chien-Pao's attacks gain nothing from the Defense drop it causes. This misread leads to overestimating Chien-Pao's personal damage ceiling and underinvesting in its coverage moveset. The ability's value is almost entirely for teammates.
How to beat it: Special attackers are the cleanest counter — Sp. Def is untouched, so a special-offense core doesn't care if Chien-Pao is on field or not. The second clean answer is simply KOing or forcing out Chien-Pao. Unlike weather or terrain, Sword of Ruin leaves zero residual effect when it goes — the moment Chien-Pao is gone, Defense values snap back instantly. A well-timed forced switch is enough to reset the entire field state.