Aww…can I keep it?
It was pretty obvious that the Gruul Keyrune would be an aggressive one. It’s actually very similar to:
Still seeing play in some Jund decks.
Of course, we have to compare. Instead of going through a point by point. Here’s the summary:
Keyrune makes a creature that doesn’t die to Ultimate Price (this Standard format’s Doom Blade) and it doesn’t enter the battlefield tapped (so you can use it to block in a pinch).
Also, the Gruul Keyrune drawing is soooo cute!