Cheap Crate [Looter] [Xaku Prime] Build

Works best for rare resources that can drop from crates like Orokin Cells, Tellurium etc.
Range is most important stat to break as many crates as possible with one cast. All other mods are for QoL and energy management.

Watch minimap for crates, cast 4 to break crates, collect loot, repeat. (Put Golden Instinct over 3 if you want to farm rare stuff. Cast Golden Instinct to find Kuria/Rare Crates etc. if you want, not necessary for crate looting.)
Combine with Retriever mods on beast companion for max efficiency.

Arcanes can be whatever feels best. Arcane Energize lets you spam 4 but is not mandatory. Arcane Steadfast can help with ability spam.

Swap Flow for Archon Flow or Primed Flow for more energy to spam 4. Using something else than Flow requires 1 Forma.

Don't forget to run a companion with Resourceful Retriever to maximize efficency!