This is why even when you don't cast her she still has good odds on winning the game
A 20 years old card has to adhere to the same criteria as a 2 days old card
As Obeka can be tapped to immediately end its controller's turn, exiling any spells and abilities from the stack by doing so, Obeka can be activated when this game-loss trigger is on the stack, negating it completely and allowing Last Chance and Final Fortune to function as two-mana extra turn spells with no drawbacks
You won't gain life
Edit 2024/01/31: Added some notes based on the fact that PokeRev opened a Neo Discovery box printed in Belgium on one of his livestreams, and I was able to figure out the obscured commons cards on the uncut Belgian commons sheet from it
In fact, experts believe we may be approaching an event horizon where more Magic cards are printed than there is money in the world to buy them, at which point we'll see economies crumble, governments topple, and trading cards become the only accepted currency across the globe (keep your rare MTG cards close