What the Rift Lab holds on this champion: the kit as Riot publishes it, the build the lab reviewed, and the matchups it has documented. Anything the dataset does not record is left out rather than filled in.
Riot's own text for each slot, in the order the champion learns them.
Ornn gains additional bonus Armor and Magic Resistance from all sources. Ornn can spend gold to forge non-consumable items anywhere. Additionally, when Ornn reaches a certain level, forging items will grant a nearby ally the ability to buy one item from anywhere on the map. This will trigger every few levels.
Ornn slams the ground, sending out a fissure dealing damage and slowing enemies hit. After a small delay, a magma pillar forms at the end location.
Ornn advances, breathing fire. Enemies hit by the final gout of flame become Brittle.
Ornn charges, dealing damage to enemies he passes through. If Ornn collides with terrain while charging, the impact creates a shockwave around him which deals damage and knocks up enemies.
Ornn summons a massive elemental at a location which travels toward him with increasing speed. Enemies run over by the elemental take damage, are slowed and are made Brittle. Ornn can recast the ability to charge into the elemental, redirecting it in the direction he hits it, causing the elemental to affect any enemies it runs over to be knocked up, dealing the same damage and re-applying Brittle.
The reviewed purchase order and rune page for this champion. Every entry that has a page of its own is linked to it; an item the catalogue holds no page for is printed as a name rather than pointed at a page that does not exist.
One slot, changed when the enemy team changes the problem. These are answers, not automatic purchases.
Ability text and the in-game title follow Riot's official Wild Rift champion pages. The tier letter is the external snapshot shown on the tier list, and the build is the Nexus reviewed snapshot — neither is a win rate.
In the matchup data documented in Rift Lab, these are the harder matchups for Ornn: Vayne (Dragon / ADC), Gwen (Baron / Top), Fiora (Baron / Top), Kennen (Baron / Top), Kayle (Baron / Top). This is a documented matchup list, not a win rate: TheNexus does not publish win-rate or pick-rate figures it cannot source.
Riot's ability text for Ornn describes crowd control (a stun, root, knock-up, pull or similar) in SEARING CHARGE (ability 3), CALL OF THE FORGE GOD (ultimate); a dash, leap or blink in SEARING CHARGE (ability 3), CALL OF THE FORGE GOD (ultimate). Plan around those abilities before a trade or a fight. These notes are keyword matches over the ability text only, not a rating of how strong Ornn is, so read the full descriptions on this page.
The Nexus-reviewed core build for Ornn, in purchase order: Warmog's Armor then Radiant Virtue then Dawnshroud then Plated Steelcaps. Runes: Grasp of the Undying, Demolish, Second Wind, Overgrowth, Scorch. Situational swaps: against enemy crowd control: Perseverance. This is a reviewed snapshot (patch 7.2b), not a build ranked by win rate.
Ornn is a Tank by Riot's classification and is played in Baron / Top. Riot rates the difficulty High. On our tier-list snapshot (patch 7.2b) it shows S tier from its external source, which is a snapshot letter and not a TheNexus win rate.
Every answer here is built from Rift Lab data and Riot's own ability text. Where the data is missing we say so instead of guessing.
