Question about Blastchain mine support.

[Tom]

So im making a Kinetic bolt build and originally i was going to stack Cast speed, crit chance/damage, and wand buffs. But then i found the Blastchain mine support gem and may need to rethink the build so here's two questions, will KB still benefit from the crit and wand passive skills if i pair it with BCM and will it also gain from mine passives?

[Scathe]

I don't have a link to download path of building, but I reccomend downloading it and using it to plan builds. it can answer your question and other questions like this for you.

I hopped into path of building real quick and it seems to show that Kinetic bolt supported by blastchain mine does indeed benefit from wand passives and mine passives.

[s54113]

Cast speed is useless for Kinetic Bolt, it is an attack. Just saying.

[Tenzek]

Directional skill on mines can be clunky. This might be frustrating to play as the mines target that random guy in the opposite direction instead of the huge boss on the screen. Either do mines with radial AoE or with big hitting skills that don't suffer so much if a few of the shots don't really do much.

Instead, use the new Spellslinger support on a supplemental spell. Lots of good options there to check out. For example, you could trigger ethereal knives or Arc to improve your clear speed while tuning KB for single target. You could clear with KB and use a big spell like glacial cascade for single target.

After reading the other comments, I see we need to be careful with PoE terminology here. Read a gem's types. Kinetic Bolt is an attack gem, so casting speed will not affect it. You need supports that match a type in the gem's list in order for the effect to apply. Kinetic Bolt has the listed exception with spell damage applying to attack damage, but that is breaking the normal rules. It will only ever be true if an item explicitly states the rule change like KBolt does. Since it does not also say that cast speed applies, you know that it won't.