When using Avacyn, nearly every board wipe becomes a one-sided affair, and quickly tilts the nature of the game into your favor
Skip the $20+ cards (Thrumming Stone, Coat of Arms, Cover of Darkness) and the deck still hums: Commander: Karumonix, the Rat King (~$1) Engines: Pack Rat (~$3.30), Piper of the Swarm (~$3), Ogre Slumlord (~$0.45), a couple of Relentless Rats / Rat Colony (~$56 each cap the copies to stay on budget) Payoffs/utility: Crypt Rats (~$0.50), Nezumi Bone-Reader (~$0.40), Bontu the Glorified (~$3) as a sac outlet, Throne of the God-Pharaoh only if budget allows The rest: cheap black removal, Swamps, and a Sol Ring The whole list comes in well under $50, and it scales up gracefully add Marrow-Gnawer and Thrumming Stone later and the same shell jumps several power levels
As to the reverses, they use the same refractor pattern as the holos, with the reverse rares and reverse rare holos being distinguished by gold HP text, and the reverse rare holos (but not the reverse rares) by a holofoil card border
At the highest sale price of $500 (if you are lucky enough to catch this collectible at a discount), this Darkrai-EX is an absolute steal
Keep in mind that it does not have an activated effect you can use on your turn
Holographic Pokemon cards are often quite valuable