Level 99 LL Crit CoC Ice Spear Inquisitor^3.25

Notes

How to use this pob:
1. Switch to block version in skill and passive tree to see the tankier version.
2. Remember to set the Lancing steel of sparying to all projectiles hit in your main skill setting for the damage calculation to work with COC.

General tips:
I like to have my unresearved mana about equal to my maximum mana cost per second. SInce this is a COC build, your mana cost can be wild and mana leech like all leeching, is not that stable so you want to have some extra mana pool.
For the same reason 10% instant leech is mandatory IMO as it solves your mana issue as well as your regeneration. You can do no regen map by using lvl 1 gems however, your damage should be enough anyway.

AVOID ANY FLASK MODS INCLUDING SEARING EXARCH ALTARS
People die if they are killed, you die if you are without your flasks. 

Dealing with Elemental Reflection:
50% from pantheon (Soul of Yugul) + 50% from flask enchantment. Craft recipe gained by unvailing Cindersorrow, you can buy unindentified/unveiled ones or just ask someone to help you enchant in the global chat. 

Bossing tips:
Turn off your Energy blade during their "Mechanics" like Maven memory games, eldrich and shaper balling phases, sirus meteor (although this one you should probably try to GTFO cuz you WILL die)

Switching your gems:
1. Use level 1 Ice spear with 23% quality to reduce mana cost, the dmg effectiveness is the same.
2. Blazing salvo on the other hand, have numbers of projectiles scale with gem level, and lv 21 gives 8 projectiles, so if you are using blazing salvo you need to be aware of your mana situation.
3. Vortex of projection is far more better than Ice nova of frostbolt from my personal experience of simulacrum. Don't know exactly why but the damage is just not there for nova.