I've been thinking for a little bit just by how the weapon works, and I think a good catalyst would be, the obvious perk of repulsor brace, and an void-only version of loose change that INCLUDES the [Weaken] effect
and for a stat boost I'd say range to help pluck off debuffs, and it won't need a aim assist boost due to the void-'loose change' being active
and if not range, then reload and/or handling
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Volatile doesn't compare to scorch and ignition or jolt, thank the Traveler CO can leech suppression and weaken, for catalyst leeching 1 of the void debuffs to fully fill the weapon's meter, upon activation will add one of the other debuffs to dual apply so for weaken and suppression adds volatile, and for volatile...proly weaken, suppression would be way too OP in crucible