Oath of Mae

When Oath of Mae enters the battlefield, put 2
+1/+1 counters on each creature and
planeswalker you control, then gain X health
where X is the amount of +1/+1 markers placed
this way. When a creature gets a +1/+1 counter
placed on it, that creature gains lifelink till the
end of the turn.
So that all may live their own lives, I will keep watch