Bonestorm projectile

Scattershot - optional
1. +mana cost
2. +charge speed

Explosions carry over to last projectile eg. projectile forks or chain without explosion then the next one explode.

Chain - not so great atm
-to low dmg
+clear

Fork - bad
-low dmg

Pierce - only for clear/AoE
+helps with clear fair bit by carrying explosions deeper into pack
-swap on boss

Ricochet - great counter to Bonestorm poor accuracy (ground works to)
+many projectile can miss
+stat appear on jewels
This is arguably as good as dps gem, unless you have target wide enough to take all projectile wide spread or cause larger enough explosions on each cast.

Chance for additional projectile(eg. 30% chance for 2 additional projectile) - bad
-only works per cast
-to much investment for low outcome

Redflare Conduit Unique armor allows for consistent power charge without downside.

Any tips appreciated.