All other SAR cards are Supporter cards
As a balance for this drawback, Flubs allows you to draw a card when casting or playing land if your hand is already empty, encouraging burning through your resources as much as possible
Wed recommend using both TCGPlayer and Collectr to keep an eye on things, and to check out other popular sets like Paldean Fates, too
Like most Magic: The Gathering cards, the value of Call the Spirit Dragons 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 (Tarkir: Dragonstorm)
This is entirely down to its first ability, which interacts extremely well with Morph creatures
What made Eldrazi so broken were lands like Eldrazi Temple and Eye of Ugin, which were actually printed several years before