Tidal Courier

When Tidal Courier enters, reveal the top four cards of your library. Put all Merfolk cards revealed this way into your hand and the rest on the bottom of your library in any order.
{3}{U}: Tidal Courier gains flying until end of turn.

Duel Decks: Merfolk vs. Goblins

When Tidal Courier enters the battlefield, reveal the top four cards of your library. Put all Merfolk cards revealed this way into your hand and the rest on the bottom of your library in any order.
{3}{U}: Tidal Courier gains flying until end of turn.

Treasure Chest

Apocalypse

When Tidal Courier comes into play, reveal the top four cards of your library. Put all Merfolk cards revealed this way into your hand and the rest on the bottom of your library.
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U: Tidal Courier gains flying until end of turn.