Does Forge of the Fluft's ability exhaust your legend in a way that prevents you from using your legend's own ability (e.g., can Azir still create a Sand Soldier if you use Forge of the Fluft's control ability)?

Ruling: No, you cannot use both abilities. Exhausting your legend is a cost for both Forge of the Fluft's ability and your legend's ability (like Azir's Sand Soldier creation), so you cannot exhaust your legend once to pay both costs, nor can you activate two abilities at the same time.

Sequence:

• You must choose which ability to activate
• Exhaust your legend to pay the cost of that one ability
• You cannot activate the other ability that also requires exhausting your legend until it readies