This build is great! But imo, I'll choose Eve of Harvest instead so that whenever you use Pulsating Bubble, you gain health while dealing damage to heroes and non-heroes. Best paired with Fountain of Renewal.

1 upvote for this build! :)

thanks bro like people who appreaciate input, im pretty new here.
but did u just agree or did u tried ingame yet?
u will notice the difference for sure. i have like 350 games with cath, thats my save pick solo xD
i like the core i always go warhorn+fountain after last patch cuz they nerfed contraption.
i get cruicible too and use the reflex block when initiate or to block enemy cc. clockwork is like just made for cath since she is an ability support (on other side: ardan rely more in his build to carry the team). aftershock i buy late if my team has problems to kill in teamfights.
one thing i do complete different is i max A, cuz it scales with more cp than B and make use of Cath heroic perk(!). if im forced to jungle or lane i get B to lv2 or 3 with a crystalbit cath cleares nicely jungle camps.
keep it updated!