Desolator

The Desolator is an Item purchasable at the Main Shop, under Artifacts.

Tips

 * Desolator is good attack damage booster, especially if your hero already has critical strike, the 60 additional damage will buff the crit and the armor reduction causes the crits to get reduced less, or even to hit stronger if the target's armor goes into negative values.
 * The Desolator is a pure offensive item, as it provides nothing but a big attack damage bonus and an armor reducing debuff, so it is usually better to not rush it as the first big item, but rather get it after some defensive items are bought. However, getting it rather early on heroes who already don't have much problems with surviving, it can have a huge impact, as enemies usually still have rather low armor compared to the lategame.
 * The Corruption debuff does work against buildings, making it a great pushing tool. Split-pushing heroes can benifit a lot from it, allowing them to take towers down much quicker.
 * Since Corruption only places a debuff on attack enemies, it basically causes all your allies to deal more damage with attack against the target, not only your own attacks.
 * The Corruption debuff lasts quite long, so sometimes it is better to get the debuff on multiple enemies, instead of focusing only one target in team fights. The debuff is also applied before your hero's attack lands, the debuff is even placed when the attack missed.

Trivia

 * In the transition from DotA to Dota 2, Desolator's name was changed from the Stygian Desolator to simply Desolator.