Mother Abbess, Superior

When Mother Abbess, Superior enters the battlefield, put a shield counter on another target creature you control.
{2}{u/r}{t}: If {r} was spent, target creature
gains Mountainwalk until end of turn.
If {u} was spent, target creature gains
Islandwalk until end of turn.
If {r}, {u}, and {w} was spent, creatures
targeted by this ability also gain lifelink
until end of turn.