In Index, there is a constant supply of orbs available, whether they be health or energy orbs. In my experience, [Titania] is a fantastic [Carrier] in the Index due to her innate [Vacuum], survivability, speed, and damage dealing capability while in razorwing.

This build uses [Equilibrium] to increase [Titania]'s survivability and razorwing duration in Index. Use [Razorwing Blitz] to increase your speed and allow you to traverse the map more quickly and collect Index points and energy. Arcane Avenger and Velocity synergize well with each other as receiving damage induces criticals which increases the chance of increasing [Dex Pixia]'s fire rate even further.

Dealing a status effect before entering razorwing will activate [Growing Power] and will increase the damage of [Dex Pixia] for the entire duration of razorwing. [Aerodynamic] would provide more survivability at the cost of an Aura forma if that is more important to you. Or, to give you more energy, equip [Combat Discipline]. [Combat Discipline] drains 1 health on kills which would allow you to pick up health orbs and get more energy from them due to [Equilibrium].

Having [Flow] equipped is gives more of a buffer when the financial stress starts getting high. If you want to use less forma, swap [Intensify] in for [Umbral Intensify].

Enjoy this build and make sure to cash out at 15!