Maybe it’s my build or gear, but Barrage is absolutely the best Core skill imo. If you have high crit or pop imbue before cast, it chain spreads and hits every mob on screen repeatedly. It’s like multi shot and guided arrow (from D2) in one!
My build is barrage, poison trap, shadow imbue, death trap, smoke grenade, exposure, preparation. My main combo is gather as many mobs, shadow imbue, smoke them, run in, poison trap, death trap, spam barrage and repeat the combo since preparation just reset everything. Passives will proc and within 1-3 secs, your death trap should have reset and you can repeat it all again. I was doing NM 15 dungeons last night and with big pulls I was able to use death trap 5+ times in under 10 secs!
d4builds.gg/skill-trees/rogue/?skills=111000000000000000001110000023000000000000000000000001110000330000011101110320000313111000000000000000001333111300000000001
