Desolator

Every point of armor in Dota 2 reduces the physical damage the target takes — and Desolator is the item that strips that protection away and hands the entire benefit to every physical damage dealer on your team. That is the key thing people miss. The -6 armor The corruption debuff is not just your damage buff. It is a team buff. When you tag someone with Desolator and your offlaner, your support with a Solar Crest, or your carry teammate hits the same target, they all deal more damage through that debuff. You bought an item and made your whole team hit harder for 7 seconds. That is the deal Desolator offers, and at 3500 gold it is one of the cheapest damage multipliers in the game.

The second reason to buy it is buildings. The Corruption debuff applies to towers, barracks, and Roshan—which means in 7.41b's accelerated pacing, where the first siege creep now spawns at 30 minutes instead of 35, Desolator turns every push into a structural demolition. Towers that would take 8 seconds of hitting collapse in 5. That matters enormously when you have a window and the game is telling you to take objectives right now.

Then there is Soul Stealer. Every enemy hero who dies under the Corruption debuff gives your Desolator +2 permanent attack damage, up to 30 charges — a maximum of 60 bonus damage stacked on top of the base 50, meaning a fully charged Desolator is an 80-damage item at a 3500 gold price tag. It rewards snowballing naturally. You play aggressively, you apply the debuff, your team closes kills, and the item gets stronger without you spending another gold piece.

Second or third item for physical damage heroes whose kill threat comes from sustained right-clicking—Templar Assassin, Clinkz, Phantom Assassin, Wraith King, Viper, Arc Warden. The 7.41b meta rewards mid-game aggression, fast objectives, and heroes that can end games before late-game power spikes become decisive. Desolator fits exactly that window. You want it between minutes 18 and 25, either right after a BKB if the enemy has lockdown, or as your second core item if the enemy lineup has no reliable way to shut you down in a fight.

The draft tells you when it is the right call. If the enemy team has two or more high-armor tanks—Axe, Dragon Knight, Bristleback, and Underlord—Desolator is not just good; it is the item that makes them killable. Their whole defensive identity is armor and HP, and Desolator peels away the first layer for your whole team.

Where you genuinely skip it: illusion-heavy heroes. Illusions cannot apply the Corruption debuff and cannot generate Soul Stealer charges. If your hero's damage plan is built around illusions — Naga Siren, Phantom Lancer, Chaos Knight — Desolator is a dead slot because your copies are doing zero of the work. Take Manta, take a damage item with illusion benefits, and move on. You also skip it against teams with negligible armor and high magic burst — if the enemy lineup dies in two spells before you ever get three attacks off, the debuff never becomes relevant.