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This deck is based around using your opponent's strength against him, literally. Basically, whatever your opponent plays, you copy it, power it up in some way (silver seraph, concerted effort, etc), and send it right back at him. For example, try enchanting one of your copied creatures with followed footsteps, so you can get multiple versions of your opponent's best creature. Alternatively, kill and copy your opponents creature with duplicant (or at least it's power and toughness) and then use mirrorweave to turn all your puny changelings into powerhouses, and laugh as you steamroll your opponent with an army of his creature. So many possibilities for fun.
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