Meanders Guide is a uncommon Creature — Merfolk Scout card from Lorwyn Eclipsed (ECL), collector number 25. Current market price: $0.13 (foil $0.32), TCGplayer market prices via Scryfall.
Whenever this creature attacks, you may tap another untapped Merfolk you control. When you do, return target creature card with mana value 3 or less from your graveyard to the battlefield.