Gleipnir

Quick history lesson, because it matters here. Gleipnir used to build from Maelstrom and Rod of Atos—one of the most interesting hybrid paths in the game, giving right-click carries a kill setup inside their farming item. That version is gone. In 7.38 Valve completely reworked it. No more Chain Lightning passive, no more Maelstrom in the recipe. Gleipnir is now purely a Rod of Atos upgrade, and that changes who builds it and why entirely.

What you are buying today is this: an AoE root. Eternal Chains launches shackles at every enemy within a generous radius around your target point, rooting all of them in place for 2 seconds and dealing damage on landing. Every hero caught in that radius. All of them simultaneously. Rooted. For two full seconds. That is one of the most powerful teamfight setup tools in the game, and unlike most AoE disables, it does not require precise positioning or a channeling window—you click the ground, the chains go out instantly, and whoever is standing there cannot move.

The other thing nobody talks about enough: Gleipnir also grants a flat bonus to your AoE spell radius. Every AoE ability your hero uses gets a bigger area. Hoodwink's Acorn Shot. Enigma's Black Hole. Blood Seeker's Blood Rite. Ancient Apparition's Ice Blast. This is not a huge number, but on heroes who already rely on landing AoE abilities, a larger radius consistently means spells that would have missed by a few units now connect. Over a full game that compounds into real value.

The Rod of Atos already gives you a single-target root on a reasonable cooldown—a solid pickup by itself for chasers and spellcasters. Gleipnir upgrades that into a teamfight weapon. The upgrade is worth it when the enemy team clusters in fights and your hero needs to set up multiple targets simultaneously rather than just chasing one.

Gleipnir shines brightest on heroes with AoE follow-up that needs enemies to stand still. Enigma roots everyone with Eternal Chains; Black Hole follows. Ancient Apparition—Eternal Chains keeps multiple heroes inside Ice Blast's AoE that would otherwise walk out. Hoodwink—root the group; Bushwhack stuns anyone inside it. Bloodseeker—root the entire team inside Blood Rite. On every one of those heroes, Gleipnir is not just a CC tool—it is the bridge between "my AoE spell sometimes misses" and "my AoE spell always hits everyone."

It is also genuinely strong as a support item on heroes who transitioned through Rod of Atos in the mid game. Mirana, Hoodwink, and Ancient Apparition—heroes who want the utility of a root and some stats without becoming pure damage dealers. The stats on current Gleipnir are intelligence, health, and mana—not damage or agility—so the profile fits support and semi-support heroes perfectly.

Skip it when you need single-target lockdown rather than AoE control. If the enemy team is spread out and you need to isolate one target, Rod of Atos's Cripple already does that job, and Gleipnir adds nothing single-target that Atos did not. Also skip it when your hero's follow-up damage is not AoE—a 2-second AoE root is only as valuable as what your team can do with those 2 seconds.

One critical note: Gleipnir and Rod of Atos share a cooldown. If you have both in your inventory for any reason, casting one puts the other on cooldown immediately. And turning invisible fully disjoints the Eternal Chains projectile—enemies who blink or go invis before the chains land take nothing.