all i can say is 1 cast last 30 minutes(long as theres no deaths or wipes, which mostly and especially on a healer, is on you) I know it hardly does anything and you can math this all day, but 30s to cast a 30 minute buff, is hardly anything to complain about. Tank stops and goes "protect?" then healer types an essay for 10 minutes in party chat why they shouldnt have to because it doesnt do anything anyway. Healer gets kicked. Time wasted trying to reason with them. Just swap it. it takes less cd time than to type why you dont need to.