In a deck like Selesnya Landfall, where your creatures are already swimming in counters from landfall triggers, Dyadrine acts as a crucial mana sink and a way to push through the final points of damage
Ostensibly, white is the worst color at drawing cards, but then Wizards goes ahead and gives it this miniature Rhystic Study, which will ensure you stay ahead on card draw or keep your opponents behind the curve
There have been times where Standard tribal decks have been extremely pushed (Goblins in Onslaught , Faeries in Lorywn ), but lately it has been quite the opposite
It's a high offer, and the first one of its kind, but more may be issued considering the rarity of the card
Its hard to envision it now, but red wasnt always an artifact-adjacent color