Archon shards:

• 1 strength
• 2 duration
• 2 armor

Helminth:

Nourish if you have energy problems, but in general [Gara] doesn't need subsumes.

Focus school:

Zenurik for the same reason as Nourish.

Companion:

Any

Weapons:

Any

Playstyle:

Always keep Splinter Storm active, this can be done by first casting Splinter Storm and then casting Mass vitrify when it runs low. Then shatter Mass Vitrify with Shattered Lash for an explosion. Use Spectrorage to maintain a high enough energy level.