Abandoning the ways of shamanism, Gul'dan entered a pact with the demon lord Kil'jaeden and betrayed his people in exchange for limitless power. But it came at a great cost: Gul'dan must sacrifice part of his own life force to fuel his destructive fel magics. With the orcish Horde under his master's thrall, both Draenor and Azeroth nearly fell into his grasp. Now, Gul'dan is set to spread his corruption across the Nexus!
Gul'dan turns Health into damage, and Auriel turns damage into Health. Together, they’re an engine of war. The sheer amount of area of effect and damage over time effects that Gul’dan provides really give Auriel a lot of energy to work with. And as long as she keeps healing Gul’dan, she won’t have to worry about her ally running out of Mana.
Gul’dan is a hero that needs a defensive Warrior to help peel for him and keep him safe. Johanna fits the bill with slows, blinds, and enemy displacement. Other strong front-line Warriors such as Muradin, Arthas, and ETC can fit the bill, as long as they don’t leave Gu’ldan vulnerable by diving too far into the enemy team.
Similar to Malfurion, Lt. Morales’s high single-target healing keeps Gul’dan fueled and able to put out a lot of damage over a long period of time with little regard to managing his Mana.
Who knew that Gul’dan and Malfurion would be best buddies? Malfurion’s high sustain combined with Innervate means that Gul’dan’s machine of using his Health and Mana to fuel abilities becomes much more efficient. These two in a lane together can be terrifying, as Gul’dan can use his abilities much more often without fear of running out of resources.
Like Chen, Gul'dan really doesn’t like Heroes who can interrupt his Drain Life. Not only can Alarak almost guarantee that Gul’dan won’t get value out of his key healing ability, but he can also easily put Gul’dan out of position in the laning phase and during teamfights.
Anub'arak has everything that Gul’dan hates. Two ways to interrupt Drain Life (three if he talents into Web Wrap), a strong initiation tool to easily reach Gul’dan and put on the pressure, and a ton of spell mitigation.
Gul’dan struggles against heroes who have strong initiation abilities that can be used to dive past his frontline. Kerrigan can easily get to Gul’dan, which forces him to play a much more conservative game than he would like to. It also doesn’t help that using Drain Life makes him a sitting duck for her devastating combo.
Chromie excels against heroes who stand still, which Gul’dan is doing every time he casts Drain Life. This pressure makes it hard for Gul’dan to have a sustained presence in team fights. He also does not have any way to reliably reach or punish Chromie, which forces him to depend on his teammates to keep her busy while he dishes out damage.