The Wraith is feeling the wrath of the patch.
Evolve’s 1.3 patch, which comes out today for PC and next week for PlayStation 4 and Xbox One, weakens many of the abilities of the Wraith monster. Developer Turtle Rock has reduced the speed of her Warp and Warp Blast abilities, and the duration of her Supernova spell is reduced by 50 percent. Also, the cooldown of her Decoy ability is now 2 seconds longer.
Patch 1.3 brings changes to other characters, but none of them are hit as hard as the Wraith. You can read the full patch notes here.
Balance changes like this are an important part of keeping an online gaming community healthy, especially for a competitive title like Evolve. Even online juggernauts like League of Legends and World of Warcraft regularly receive patches that tweak the abilities of each character.