I enjoyed Time Spiral quite a bit, and I still set my foot down on the 6/6 trampler, he's good, but we won't see him in every deck, and specially not in large quantities, you can bet that. I'd play him in Jund, and only because I can Pulse multiples if they're down, and Jund has also got Terminate. And I'd still not be so sure on what to cut to make room for him, so, yeah, Limited staple (but tricky to play with, requires some knowledge), Constructed-wise, it's still a bit hazy.