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 - $1.30
Lightly Played - $1.00
Moderately Played - $0.90
Heavily Played - $0.80
Damaged - $0.70
Near Mint Spanish - $1.30
Lightly Played Spanish - $1.00
Moderately Played Spanish - $0.90
Heavily Played Spanish - $0.80
Damaged Spanish - $0.70