Once per turn, during the End Phase: Gain 1000 LP
We'll suggest a couple of things within your price range
Of course, if you counter a spell with this before you have three colorless and two blue mana available, you straight-up lose the game during your next upkeep so the drawback is quite steep but any counterspell player knows exactly the right time to pull this tremendously strong free counterspell out of the bag so they wont get hit with a good game prematurely
Notably, the chase card, Umbreon ex Special Illustration Rare, is down by over $200 but still remains the top-valued chase card of the entire Scarlet & Violet era
If you buy over $ 40, your shipping method will be standard shipping and it will get a tracking number for free.(This condition does not apply to large Figure, etc.)
With multiple dragons on the battlefield, this can easily turn Dromoka into a counter vending machine that makes your Dragons outscale any threat that might attempt to stand against them