Catharsis Corsairs

At the beginning of each opponents combat, choose a color. Target creature you control gains protection from that color and has "return this creature to its owner's hand at the end of turn."
Swift as the seas, light as the wind; Captain Reviask leads, his crew disciplined. For they were blessed, from the sea of Sarpadia she would submerge; a beautiful angel of justice, who requisitioned them to purge.