I made an arc build but had to use cwc with lightning tendrils for dmg.

Arc good enough to use as an ability by itself now without linking it to totems or a skill?

yes

self cast can be very powerful, if you do an arc trapper though you can easily clear Hall of Grandmasters which is a plus

buffed in 3.9

Arc self cast is strong, arc trapper can do all content in game with a few chaos investment.

its great.

I prefer Arc self cast with a high crit build. It's a ton of fun and watching en entire screen die is super rewarding Good luck this season.

Bronze league

for cwdt yes
since it autoaims


for selfcast bad, since it miss the projectile keyword