When Merrow Harbinger comes into play, you may search your library for a Merfolk card, reveal it, then shuffle your library and put that card on top of it.
Near Mint - $2.500
Lightly Played - $2.000
Moderately Played - $1.800
Heavily Played - $1.500
Damaged - $1.300
Near Mint Spanish - $2.500
Lightly Played Spanish - $2.000
Moderately Played Spanish - $1.800
Heavily Played Spanish - $1.500
Damaged Spanish - $1.300