Knight of the Holy Nimbus

Flanking (Whenever a creature without flanking
blocks this creature, the blocking creature gets
-1/-1 until end of turn.)
If Knight of the Holy Nimbus would be
destroyed, regenerate it. (Tap it, remove it from
combat, and heal all damage on it.)
{2}: Knight of the Holy Nimbus can't be
regenerated this turn. Only your opponents
may activate this ability.