~~In mastery tree it says keystone increases healing and shield by 10% and also target's resistances if it's casted on it. In game tooltip says It increases healing and shield AND resistances if it's casted on ally.~~ (typed too fast so you might not get what I mean, but you can read it for reference)
In game: Your shields and heals on allied champions (excluding yourself) are 10% stronger and increase your target's resistances by 15% for 3 seconds (clearly states it only works on **ALLIES**.)
On client: Your shields are heals are 10% stronger (doesn't mention **ALLIES** so it should work on you also). Additionally, your heals and shields increase your target's resistances by 15% for 3 seconds when used on an ally rather than yourself.
Which one is wrong/correct?