Sure enough, Wilds of Eldraine has a cohesive blue-red "spells matter" draft archetype
Changelings are interesting because treefolk are usually expensive, so cards like Masked Vandal and Chameleon Colossus lower the curve and add versatility
That said, if your deck does run Equipment, +1/+1 counter effects, or anthems, Esper Sentinels tax can get truly untenable, virtually guaranteeing you three or more cards per turn cycle
We know the feeling
This card would otherwise be too costly to play in the deck, since you're very vulnerable to board wipes, and need to have an opponent on the ropes before they can build up the mana to cast a Sunfall
Legal in Legacy, Vintage, Commander, and other Eternal formats, these cards are an exciting way to celebrate the epic stories of Middle-earth