Theros, United-tribe

{1}{w}Target Merfolk gains protection from the
color of your choice until end of turn
{2}{g}Tap an untapped Merfolk you control,
Search your library for a basic land card,
reveal that card, and put it onto the battlefield
tapped then shuffle your library.
{3}{u}Create a 1/1 blue Merfolk creature token
Draw a card.