Each creature you control with a counter on it has ward . (Whenever it becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

: Put a +1/+1 counter on target creature that entered the battlefield this turn.

White legendary creatures you control have "bands with other legendary creatures." (Any legendary creatures can attack in a band as long as at least one has "bands with other legendary creatures." Bands are blocked as a group. If at least two legendary creatures you control, one of which has "bands with other legendary creatures," are blocking or being blocked by the same creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

When Cathedral Sanctifier enters the battlefield, you gain 3 life.