When Forerunner of the Heralds enters the battlefield, you may search your library for a Merfolk card, reveal it, then shuffle and put that card on top. Whenever another Merfolk enters the battlefield under your control, put a +1/+1 counter on Forerunner of the Heralds.
NM-Mint - $0.50
Lightly Played - $0.45
Moderately Played - $0.40
Heavily Played - $0.35
Damaged - $0.25
NM-Mint Non English - $0.50
Lightly Played Non English - $0.45
Moderately Played Non English - $0.40
Heavily Played Non English - $0.35
Damaged Non English - $0.25
Foil Prices
NM-Mint Foil - $6.00
Lightly Played Foil - $5.40
Moderately Played Foil - $4.80
Heavily Played Foil - $4.20
Damaged Foil - $3.00
NM-Mint Foil Non English - $6.00
Lightly Played Foil Non English - $5.40
Moderately Played Foil Non English - $4.80
Heavily Played Foil Non English - $4.20
Damaged Foil Non English - $3.00