Everyone knows there are common themes that decks are built around: Weenie hordes, counter-magic, discard, land destruction.... Pure Reflections is NOT one of those, and it is NOT expected. And If you read the card closely you're going to notice something unusual:
Pure Reflection
2W, Enchantment, Invasion Rare
Whenever a 
player plays a creature spell, destroy all Reflections. Then that player puts a 
white Reflection creature token into play with power and toughness each equal to 
the converted mana cost of that spell.
Did you see it? Well, consider the following example with Pure Reflections in play.
PR player) (tap 5 plains) "I'm casting Blinding 
Angel" 
opp.) (tap 2 islands) "nope, 
counterspell" 
PR player) "ok, all reflection 
tokens are virtually placed in the graveyard, a 5/5 reflection token is in play, 
and the Blinding Angel goes to the graveyard.  I'm done"
At this point the opp. will re-read the card, call a judge or understand that the words 'whenever a player plays a creature spell...' (not to be confused with Whenever a creature comes into play...) means that Pure Reflections effects are going to happen when the spell is placed on the stack (yep, even if countered). You're going to run into many opinions with this approach; common 'comments' are "I'll just bounce that token to your hand, it's not that great". And I'll sit there thinking that they used a counterspell and a 'bounce' card to deal with one creature. Will they/Can they do that in the next round or the one after that?
This is just the beginning. Now that you understand how P.R. works, what happens if the creature being cast is a gating creature, like Sawtooth Loon, or Fleetfoot Panthers, or a normal *cough* Mystic Snake? With gating the creature can return itself and still give you a token (each turn) If you cast the loon, is 2WU worth it to see 2 new cards and a 4/4 creature each turn? Or a sudden 3/3 blocker each turn for 1GW? What about countering an opponents spell and placing a 2/2 snake AND a 4/4 reflection in play all for 2UG.
Ready to dive into deck building with P.R.? Well, you might want to wait. Look at Unnatural Selection:
Unnatural Selection
1U, Enchantment, Apocalypse 
Rare 
[1]: Choose a creature type other than 
Wall. Target creature's type becomes that type until end of turn. 
I'll end this idea here since this note is for 'single' card strategies, but make sure you understand how changing two cards with the same name into legends is only a side benefit of using this card. If P.R. is in play it can make their creatures 'Reflections', and make your Reflections into any one word creature type you desire. "Hamsters" seem to be the preferred type of choice so far. Oh, and don't even think about how changing a Spiritmonger into a Reflection, or using this with Tsabo's Decree on all your opponents creatures would affect a game. Destroying all your opponents creatures is overrated... oh, it isn't?
Here are two decks to begin your thoughts with:
IBC - UWG       
        
        
        
        IBC -- UW 
        1 Wash 
Out              
        Pure 
Reflections        
        4 
        4 Sawtooth Loon 
        
        Unnatural 
Selection     4 
        3 Fleetfoot 
Panther             
Sawtooth Loon           4 
        4 
Sterling Grove        
        Stormscape 
Familiar     4 
        1 Questing Phelddagrif  
Silver Drake            
3 
        4 Mystic Snake  
        
        Wash 
Out        
        
        2 
        4 Pure 
Reflection       
        Absorb  
        
        4 
        4 Unnatural 
Selection           Repulse 
        
        4 
        4 
Absorb        
        
        
        
Prohibit        
        
        4 
        3 
Prohibit      
        
        Collective 
Restraint    3 
        4 
Repulse       
        
        
        Fact or Fiction 
        2 
        
        
        
        
        
        
        3 
Forest        
        
        
        Coastal Towers  
        4 
        4 
Plains        
        
        
        Dromar's Cavern 
        3 
        6 
Island        
        
        
        Plains  
        
        6 
        2 Treva's Ruins 
        
        Islands 
        
        9 
        3 Coastal 
Towers        
        
        3 Elfhame 
Palaces       
        
3 Llanowar Wastes
Sideboards left up to you; consider Tsabo's Decree if you're going to splash black (in UW version). Dismantling Blow's, Collective Restraints, Rout, Mask of Intolerances....
Todd Roemmich 
Vrodaire@Yahoo.com