Can you pay for Sett the Boss's ability with Seal/Gold, given that Sett doesn't start a chain?

Ruling: Yes, you can use Seal/Gold to pay for Sett's effect even though Sett doesn't start a chain.

Nuances:

• Seal and Gold don't need a chain to be activated, they just require their conditions to be met
• Add abilities can be activated during the resolution of an effect