After seeing the new Saboteur ascendancy changes I really wanted to go for a leaguestarter that will get the best usage from lucky crit and returning projectiles. After looking through some skills Rolling magma came as a top contender for extra hits through randomized bounces and this is what I'll be going for. Stacking AoE should bring the amount of hits per cast up nicely. I went for a mines setup because I like mines, but I hope someone could create an arcanist brand setup for the lower chain interaction with Rolling Magma.

Video PoB: https://pobb.in/Qb_7oOcX5Cff

Full planner I'll be going with: https://pobb.in/U36zGcEPechE