How to counter Nyx Assassin in Dota 2

Rock spikes burst from the earth along a straight path. Enemy units take damage, then are hurled into the air and stunned.

Deals damage equal to a percentage of the target's Max Mana and burns part of it away. Deals additional damage equal to a percentage of the damage the target has taken from Nyx Assassin in the last 15s. Resets accumulated damage before applying damage.

When activated while above ground, Spiked Carapace reflects and negates damage dealt to Nyx Assassin (max once from each source), as well as stunning the source of the damage. Activating Spiked Carapace will not break Vendetta invisibility. While Burrowed, Spiked Carapace instantly stuns nearby enemies when cast.

Nyx Assassin buries himself beneath the battlefield over a short duration. Once burrowed, Spiked Carapace instantly stuns nearby enemies when cast, the range of Mind Flare and Impale is increased, and Impale's cooldown is decreased. While burrowed, Nyx Assassin is stationary, unable to attack, and invisible. Nyx Assassin gains damage reduction from all damage sources.

Nyx Assassin's damage on enemies also burns mana as a percentage of the damage dealt.

Nyx Assassin becomes invisible and gains a speed bonus. If Nyx Assassin attacks to break the invisibility, massive bonus damage is dealt with the attack that applies a break to the target. Nyx Assassin has 75 additional attack range and a 70% faster attack animation for this attack.

Emerge from the burrow.