Mirrorworld essence

{x}{2}: Mirrorworld essence becomes a copy of target permanent with mana value X or less.
{t}: add {c}{c} to your mana pool. Use this
mana only to activate abilities of permanents that didn`t start the game in your deck (This includes copies of permanents you don`t own.)

A shapeless world suddenly took form, and soon not one, but two dryads were staring into the void.