Looks like an upgrade to Flayed shot, there are several of these datamined for all classes. No idea whether they are part of the Covenant Soubinds or confined to Torghast as random upgrades.
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It is especially odd as a design choice since Survival already had a well-defined niche that was dependent on being ranged with teh exotic ammunitions they used. Beastmaster meanwhile has a rotation that is mostly about buffing your pet, and several of the abilities are ones that would fit better with the theme if they were melee alongside their pet. Things like bestial wrath buffing yourself being silly when you are not melee.