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 - $1.700
Lightly Played - $1.400
Moderately Played - $1.200
Heavily Played - $1.000
Damaged - $900
Near Mint Spanish - $1.700
Lightly Played Spanish - $1.400
Moderately Played Spanish - $1.200
Heavily Played Spanish - $1.000
Damaged Spanish - $900