Sphinx of the Guildpact 7
Artifact Creature - Sphinx

Sphinx of the Guildpact is all colors.
Flying
Hexproof from monocolored (This creature can't be the target of monocolored spells or abilities your opponents control.)

5/5

Might just be off the mark here, but is this shops playable? The 6 spot gives us Wurmcoil and Hellkite, and 7 is just a lot of mana in general. However, this blanks plow, by force, grudge, bounce spells, etc., etc. A 5/5 flyer for 7 isn't super hot, but a 5/5 flyer on the battlefield is better than a 6/6 wurm in exile or a 5/5 hellkite in the graveyard.

Nah. You're not even bringing Wurmcoil against decks that pack that kind of removal, so you can't compare this to it since it's not a card that comes in against the same decks.
Also this isn't immune to Dack, which is the greatest problem you'll face.

If you are playing shops you have ravager, so I would still rather have wurmcoil because you can sac it for tokens in response to plow and is cheaper.