Just two thoughts that popped into my head.
Superior Sigil of Ancestry(namepls?) – Gain a charge of +2 All Stats each time you kill a foe, give if you kill an enemy player. (Max 25 stacks, ends on down.)
Blessing of the Dragons (namepls?) – (9 sec) Increases All Stats of nearby allies by 30 Points. (Radius 600. Combat Only.)
Also missing a Condition Damage and Healing Power variant of this. ^