Cort by vonBoomslang

Using any of Cort's abilities grants Discipline, which refunds part of that ability's mana cost over a duration. Discipline is separate for each ability. Using the same ability before its Discipline expires will cause mana not yet refunded to be lost.

Each ability's remaining Discipline is shown on the skill's icon, similar to a charge counter.

After a 0.2s delay, fire a bola in a targeted direction, which will wrap around the first non-structure enemy hit and explode after a 2s delay, dealing full damage to the target and half that to nearby enemies. The ability's base damage is moderate, but it is increased by any damage the target takes from Cort and half that from other sources, up to a cap of high.

Range: ~6.5
Width: Penetrating Round or thereabouts
Radius: Flame Strike or thereabouts
Cooldown: 8s
Mana: 120
Discipline: 80 mana over 16s

The explosion's area of effect and time to detonation is displayed by a ring around the target's feet, such as with Azmodan's Master of Destruction.

If multiple bolas hit the same target (e.g Abathur clone), the delay before exploding isn't refreshed but the maximum damage is added together.

After a 0.2s delay, fire a rapid-moving fiery projectile which pierces through all targets in a straight line, dealing medium damage, as well as leaving a fiery trail which deals the same damage over 3s to all enemies standing in it.

Range: ~6.5
Width: Penetrating Round or thereabouts
Cooldown: 6s
Mana: 100
Discipline: 60 mana over 12s

Create a circular smoke field, becoming invisible, momentarily unrevealable and dashing a short distance in the targeted direction. Cort is briefly immobile after the dash, the duration of which scales with the distance and his movement speed. Unless revealed, he remains stealthed until he leaves the smoke field, or it disperses, which happens after 5s, or 1s after an enemy hero enters it.

If Cort does not move after the dash, his next basic attack is empowered and has increased pre-fire delay but deals increased damage (to medium-high), which will crit and be further increased (to high) if the target leaves Cort's attack range before it lands.

Range: ~2
Radius: Smoke Bomb or thereabouts
Cooldown: 12s
Mana: 200
Discipline: 140 mana over 30s

After a 0.5s delay, fire an explosive arrow in a targeted direction, which passes through all obstacles in a long line, detonating when reactivated or at maximum range. The detonation deals very high damage in a moderate area, then scatters three grenades which bounce on the ground and explode for high damage if they land on an enemy or after stopping.

Range: Wailing Arrow or thereabouts.
Radius: Wailing Arrow or thereabouts
Radius (Grenades): Junkrat's Grenade Launcher or thereabouts
Cooldown: 40s
Mana: 160
Discipline: 120 mana over 60s

The grenades are scattered at 120 degree angles from one another, with one towards wherever the cursor is on detonation.

To avoid a one-two shotgun if you detonate right in front of an enemy, the grenades only check for collision when they visually bounce on the ground, not all the time.

Channel for 0.5s to deploy Cort's crossbow into an autonomous sentry, which will continually attack his enemies as long as he remains near it. The sentry is an immobile, untargettable, uncollidable pet which will choose a visible hostile non-structure target in its range and attack it until it dies or leaves the range. If Cort attacks a non-structure target in the sentry's range, it will switch focus to that target. The sentry itself does not provide vision. The sentry's attacks have Cort's unmodified basic attack range and speed and deal 80% of his attack damage as physical.

The sentry lasts until reactivated or up to 15s, doubled if Cort remains in its range. While the sentry is deployed and for 5s after, Cort will attack with throwing knives, reducing his attack range to 4.4 and his damage by 20%, but his attacks no longer have a pre-fire delay. The range of his Bola Shot and Elemental Arrow are also reduced. Cort may interact with the turret to cancel both the 5s delay and the cooldown.

Range: Cort's basic attack range.
Cooldown: 20s from end of last sentry.
Mana: 100
Discipline: 60 mana over 40s

While the sentry is deployed, Bola Shot and Elemental Arrow are replaced by Bolas and Impale, which are functionally similar and benefit from the same talents, but have a different animation and a shorter range.

The sentry uses the model of Cort's crossbow atop a team-colored tripod.

Yes, using it lock down an interactable objective is intentional. To counter, have a tank move in first so another hero can interact with it, since Cort can't remotely change its target.