Ultimate

Ultimate
A Hero's last skill, which can be trained at Level 6, Level 11, and Level 16. In general, Ultimates have long cooldowns due to their sheer impact and effect and often have the potential to be a game changer. Earthshaker's Echo Slam and Sand King's Epicenter are examples of such. Hero ultimates can be an active skill or a passive skill.

Among ultimate skills, there are some ultimates which don't have a particularly long cooldown such as Sniper's Assassinate, Pudge's Dismember, and Slardar's Amplify Damage. Some ultimates, while being active skills, don't even have a cooldown, such as Leshrac's Pulse Nova, Tinker's Rearm, Enchantress's Impetus, Storm Spirit's Ball Lightning, and Pugna's Life Drain improved by Aghanim's Scepter.

Some heroes also have passive skill ultimates which greatly enhances the hero's capability in their role, such as Riki's Permanent Invisibility, Drow Ranger's Marksmanship, and Tiny's Grow. Skeleton King's Reincarnation is a unique ultimate where it is a passive skill by nature but has a cooldown and mana requirement typical of an active skill.

Aghanim's Scepter
Improve the ultimate of some heroes