When activating Unlicensed Armory (which requires discarding as a cost) with Jinx, Rebel in play, what is the correct stack order?

Ruling: Unlicensed Armory goes on the chain first, then Jinx, Rebel's trigger goes on top of it.

Sequence:

• Activate Unlicensed Armory (it goes on chain)
• Pay costs including discarding a card
• Jinx, Rebel's trigger goes on the chain on top of Armory

Nuances:

• The discard being a cost does not change the sequencing - triggers do not interpose between paying costs and putting the ability on chain
• Armory is an activated ability that can only be used at base speed
• The ability goes on chain before costs are finalized and paid