Abilities
Ornn forges items anywhere and upgrades his own and allies' items, gaining bonus resistances from all sources.
Ornn creates a fissure that slows enemies, then forms a magma pillar at the target location.
Ornn advances, breathing fire; the final gout makes enemies Brittle.
Ornn charges forward, creating a shockwave that knocks up enemies if he hits terrain.
Ornn summons a speeding elemental that slows and Brittles enemies, then can recast to redirect it for a knock-up.
Guide
Ornn excels as a frontline tank and initiator in ARAM, using his brittle procs and item upgrades to control fights and empower his team. Focus on peeling for carries and engaging with your ultimate to disrupt enemy formations.
Tips
Use your W, Volcanic Rupture, to poke and slow enemies from a safe distance in ARAM's narrow lanes.
Brittle procs from your passive are key-land auto-attacks after abilities to maximize damage and crowd control.
Upgrade your team's items at the shop using your passive; prioritize upgrading carries' core items for a power spike.
Save your ultimate, Call of the Forge God, for engaging or peeling-its knock-up and slow are devastating in team fights.
Build tanky with Sunfire Aegis and Thornmail to survive ARAM's constant skirmishes and deal consistent damage.
Combos
Q (Searing Charge) > auto-attack > W (Volcanic Rupture) > auto-attack for a quick Brittle proc and burst.
R (Call of the Forge God) > E (Bellows Breath) to reposition and follow up with a knock-up and slow.
E (Bellows Breath) to create terrain, then Q to charge into enemies and set up a Brittle combo.