If the spell's normal effects include exiling itself, Lilah's effect won't apply to it and it won't become plotted
However, I think its value state-side is going to largely be dependent on how much competitive play it sees
PSA grading is worth it for valuable, rare, or vintage Pokmon cards where professional authentication and a high grade can i ncrease market value by a significant amount
The text on Kaza, Roil Chaser reads: The next instant or sorcery spell you cast this turn costs X less to cast, where X is the number of Wizards you control as this ability resolves. In the same vein as Vadrik, you get the total cost of the spell plus kicker, and then reduce the total cost
When Enduring Curiosity dies, if it was a creature, return it to the battlefield under its owners control