Fearless and reliable, Illaoi is one of the newest additions to League of Legends' formidable Anima Squad. She's also ready to defend Earth from the incoming Primordian onslaught in the game's newest PvE mode, Swarm—but only with the right build for the job.

There are many different weapons and upgrades that you can collect over the course of a game. Depending on the champion you’ve chosen, you’ll need to choose wisely so that you can maximize your potential on the battlefield, whether you’re a ranged threat like Xayah and Jinx, a ferocious melee damage dealer like Yasuo, or a frontline fighter like Illaoi.

If you want to fight the Primordians head on, this is the best build for Illaoi in League's new Swarm game mode.

Illaoi can dish out a lot of punishment with the right items and upgrades, while also becoming an unbreakable tank that can absorb a lot of damage for her team. The items you find and the upgrades you receive are up to chance, but you can still achieve a powerful mid-to-late game build if you focus on certain aspects of her kit.