Captured Sunlight Id only play Captured Sunlight in a dedicated lifegain deck, but it would be appropriate, good even
Its powerful but its a well-known, telegraphed line that invites removal and can sour a casual table, so read the room before you assemble it
Another thing you can do if a specific card is causing you problems is find cards that don't remove it, but negate its effect
All of this on one card is the definition of pushed, and if youre in any deck except a strict spellslinger deck, theres an argument for running Lethal Scheme
This is incredibly powerful in conjunction with the right cards, as it allows you to really accelerate the resources you have available and stay a step ahead of your opponent all the way
Now this is a card with the potential to be a format all-star