Galathul Galecaller // Corvid Squall looks best suited for a blue tempo or spells-matter deck that wants to apply evasive pressure while generating incremental value, especially in formats that can leverage Storm Crow synergy or benefit from go-wide flying threats (such as casual tribal Bird builds or quirky Storm-style setups)
It scales with the game, has multiple ways to get damage through, and has no color identity
There are a couple of things going on here to make this card so valuable
Unlike Elspeth, Vivien on the Hunt is worth a high mana cost
Technically, 22 rares fall into the bulk and semi-bulk categories, but this is somewhat deceiving because another 22 rares are worth less than $5, which means a massive 44 of the 53 rares in the set (83%) are bad opens from a value perspective, considering the MSRP of a Masters 25 pack is $10
which we've seen a couple of in previous expansions