You may choose not to untap Pearlspear Courier during your untap step. {2}{W}, {T}: Target Soldier creature gets +2/+2 and has vigilance for as long as Pearlspear Courier remains tapped.
2004-10-04
It checks the creature type when the ability is announced and resolved, but once the effect is placed on the creature, if its creature type changes the effect still continues.