Iron Horse

Mount {3}{t}: (Attach this creature to another
creature you control. It does not untap during your
untap phase while mounted. It becomes detached if
untapped. Mount only as a sorcery.)
{0}: Untap Iron Horse. Use this only if it is
attached to an untapped creature.
Attached creature gets +2/+2.
"All the speed and loyalty gold can buy.."