https://www.grimtools.com/db/items/9354
I’m really curious: does anyone ever use that granted skill in caster builds? This beam is weak, it has mixed damage and it drains energy like a mess.
I suggest to replace the granted skill on this book with something more useful: elemental blast with chance on attack/crit attack for example.
Tz Tz made a whole compilation of builds using this skill. Not tested for crucible, but it’ll give you an idea of the tome’s capabilities.
JoV used it in vanilla. It is crap tbh and imo could use a massive buff. Unpopular opinion here but the Electrocute Damage should be changed to % Chance of Electrocute/Frostburn/Burn.
The 100% Penetrating mechanic is decent for AoE but not game changing I’d say the flames of ignaffar type skill or drain essence type skill is much better for AoE. So imo they should boost its single target DPS. Since we have component skills at Tier-1 an item skill with a fairly unique template belongs there as well.
All this reminds me, while they are at it they should also give us Mythical Warhammer of Heavenly Judgement with Sun Spot buffed to Hell Path levels.
I agree that the skill is kinda weak, but the item as a whole don’t need any kind of buff, it’s one of the best off-hands in the game imho.
This skill is way below average and it proves that even if you give AAR piercing, it will still suck. Lack of cast speed on the off hand is also regrettable when its skill desperately needs it capped.
It’s like you were never away 
Exactly. This book is great but its granted skill should be redone.
I would like to think that we will get that skill as one of the yet to be revealed skills of Oathkeeper. cool:
going to topic. obliteration sucks for me. not in favor of any channeling skill except the melee channeling skilll called Eye of reckoning 
But making the granted skill more useful with any kind of rework would be an overall buff to the item, which i’m nut sure it needs (to say the least).
Of course some nerf to the stats along with the buff/rework to the skill could balance things out, but i’m not sure it’s worth the hassle.