This is good in an aggressive deck, and I think black/red will be especially interested in this, just make sure youre likely to maximize both cards as much as possible
With the Eldritch Moon list being a success overall, lets see what I think will be the Top 20 cards for Standard from Kaladesh
Amber and Emerald offers this, as well as plenty of strong and exciting cards to play with
Madam Mim, Foxs Chasing the Rabbit ability allowed me to return a character from the board to my hand, which meant I could bring back damaged ones or trigger powerful effects from cards entering the battlefield over and over - when Merlin, Goat, which gains a lore each time it enters and leaves the battlefield, turns up you can see where the game really starts
As unwieldy as it may appear to us now, this was one of the best deals out there, because it was large enough to pose a threat and efficient enough to not slow you down and let you leave mana open, which left it all but impossible to kill