Armlet of Mordiggian

At 2500 gold, Armlet delivers offensive and defensive value that no other item at that price point comes close to matching. When you toggle Unholy Strength on, you are getting +35 attack damage, +25 strength, and +4 armor simultaneously—on a strength hero, that +25 strength alone translates to roughly 550 additional HP, 25 attack damage on top of the flat bonus, and meaningful armor. The total stat package, while active, would cost you significantly more than 2500 gold if you were buying those numbers across separate items. That raw efficiency is why Armlet gets built as a first or second core item on strength carries who want to be relevant on the map before 20 minutes — it accelerates your power spike dramatically compared to anything else available at that cost.

The health drain — 45 HP per second while active — is the tax you pay for that efficiency, and it is the mechanic that separates players who know how to use Armlet from players who die to it. The drain is non-lethal, meaning it literally cannot kill you by itself. But it puts you in a permanently low-health state if you leave it running outside of fights, which means a single stun into a burst combo can finish you before you have time to react. Armlet rewards players who treat it as a fight-duration toggle, not a passive stat stick.

The other thing Armlet does that no other item at this price does is give you a pseudo-heal in an emergency. Because toggling on adds 550 to your current HP as well as maximum HP, you can sit at 100 HP, press the toggle, and suddenly you are at 650 HP—not dead, survivable, and able to fight back. This is the Armlet toggle technique, and mastering it is the difference between Armlet being a liability at low health and Armlet being the reason you survived a fight you had no business winning.

The first or second item on strength carries and tanky cores who benefit directly from the strength scaling—Sven, Wraith King, Dragon Knight, Chaos Knight, Lifestealer, Mars, and Huskar. The window is 8 to 14 minutes. The whole point of the armlet at this timing is that you come out of the laning phase with a power spike that makes you dangerous for objectives and skirmishes before the enemy team has completed their defensive items.

The draft tells you when the drain is manageable. If your hero has built-in lifesteal—Lifestealer's Feast, Wraith King's passive, or any hero with a natural sustain mechanic—the 45 HP/s drain is largely negated in fights by the lifesteal returning HP faster than the drain removes it. Against those heroes, Armlet is close to cost-free while dealing damage. That is the ideal amulet scenario.

Where you skip Armlet or actively avoid it: intelligence and agility heroes with no sustain mechanism. The drain punishes you brutally if you cannot recover the HP you are losing, and buying a lifesteal item just to support an Armlet build is a two-item investment that loses value compared to simply buying one proper damage item. You also skip it into heavy burst lineups—Leshrac, Lion, Skywrath—where your Armlet-on health state guarantees you die to the first ability rotation that lands. An armlet's value collapses when you are spending the whole game at 60% HP because any burst one-shots you from that threshold.