Like most Magic: The Gathering cards, the value of Weatherlight depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Dominaria Promos)
When new sets are released nowadays, I feel like Im digging through dirt trying to find gems
I even included an infinite combo in the deck
Which means by the time we see a Blue Ugin judge foil, a set foil Ugin could be worth $120 $130 and even if a non-foil Blue Ugin were to be worth a mere $10 $20 more, Blue Ugins would probably still command a price range of $130 $150
It seems as though the vicious grasp of Sauron cannot be contained to just Middle-Earth
Ygra changes all of that and allows your Gilded Goose and Bristlebud Farmer to get in on creature-based sacrifice synergies like Blood Artist and Midnight Reaper for even more value