Driscoll, the Spelltide

First Strike
{u}{r}, Sacrifice a salamander: Search your library
for a drake and put it onto the battlefield under
your control. Activate this ability only once per
turn.
{2}{u}{r}, Sacrifice a drake: Search your library
for a dragon and put it onto the battlefield
under your control. Activate this ability only
once per turn.
Dragons you control get +2/+1