Enduring Rage

Put an Angry Role on each creature you control.
(Enchanted creature gets +1/+1.)
Creatures that already have an Angry Role
instead get an Enraged Role.
(Enchanted creature gets +1/+1 and first strike.)
Creatures that already have an Enraged Role
instead get a Frenzied Role.
(Enchanted creature gets +1/+1 and double strike.)
"Trying to calm down the frenzied dwarfen berserkers
only made them more angry."