I know that nobody was ever excited about playing Giant Growth since the UG Infect deck rotated from Standard, but this is no Giant Growth. It's RED Giant Growth that doesn't give you that much of toughness but grants you Scry 1.
It's still vulnerable for being 2-for-1'd by removal, but the actual upside of resolving it can be huge. Especially when doing it (safely) on Ash Zealot. Either 3 damage to the face or helping at killing off a huge creature in a way Lightning Bolt does that is just amazing. It needs a creature, but when you have one - you can use it to scry as well.
I think it could even get a chance at Mono Red Pyromancer. Casting that on Elemental tokens to ask your opponents to waste Doom Blade on token is a nice deal in my opinion.
This card might
actually be huge. I'd appreciate further analysis by the others.