I’ve been playing Tomoharu Saito’s UR Flash deck a lot recently. I love. I also like the Dragon variant, but Rattlechains and Dimensional Infiltrator is where its at for me. There already was a blue-white version of this deck, which also seems powerful, but this time it gets a huge boost in a couple of very good cards (okay, one good, two I think might very well make it):

I’m not sure how to actually build this, but lets give it a try. I need a good base of creatures and spells, but I’m not sure I really want to play hard removal, because counters and tapping are probably very good with Niblis of Frost.

So, here’s one version:

creatures (20) 4 Rattlechains 4 Dimensional Infiltrator 4 Spell Queller 2 Selfless Soul 2 Bygone Bishop 4 Niblis of Frost spells (16) 4 Clash of Wills 3 Grip of the Roil 2 Essence Flux 3 Spell Shrivel 4 Send to Sleep lands (24) 6 Island 6 Plains 4 Evolving Wilds 4 Port Town 4 Prairie Stream

No Reflector Mages might just be crazy…