At the beginning of your end step, manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)
Sacrifice Whisperwood Elemental: Until end of turn, face-up nontoken creatures you control gain "When this creature dies, manifest the top card of your library."
Near Mint - $2.00
Lightly Played - $1.75
Moderately Played - $1.50
Heavily Played - $1.25
Damaged - $1.00
Near Mint Non-English - $2.00
Lightly Played Non-English - $1.75
Moderately Played Non-English - $1.50
Heavily Played Non-English - $1.25
Damaged Non-English - $1.00