They’ve nerfed this a bit recently but still feel likes it’s pretty solid. I play wraith/support Ivy and take it on both since being able to melt guardians/walkers quickly is good.
Wouldn’t say it’s a must have since there’s a lot of characters where this isn’t a huge benefit for their playstyle.
I typically sell it mid/late game since once the walkers are down you’re probably wanting something else and are getting to the point where you’re running out of open slots but for 500 it’s good value.