When Merfolk Surveyor enters the battlefield, explore-clash. If you win the explore-clash, gain 3 life. (To explore-clash, you and an opponent each reveal the top card of your respective libraries. Put any lands revealed this way into their owner's hands. Put a +1/+1 counter on this creature for each nonland card revealed this way. Then, each player who didn't get a nonland puts the card back or into their graveyard. You win the explore-clash if the mana value of your revealed card was higher.)
NM-Mint - $21.00
Lightly Played - $18.90
Moderately Played - $16.80
Heavily Played - $14.70
Damaged - $10.50
NM-Mint Non English - $21.00
Lightly Played Non English - $18.90
Moderately Played Non English - $16.80
Heavily Played Non English - $14.70
Damaged Non English - $10.50