Riptide Entrancer
{1}{U}{U}
Creature -- Human Wizard
1/1
Whenever ~this~ deals combat damage to a player, you may sacrifice it. If you do, gain control of target creature that player controls. (This effect lasts indefinitely.)
Morph {U}{U} (You may cast ~this~ face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)