Thor's Day: The Thunder Frog for 13th Age

In the Duchy of St. Cuthbert, a brutal and ancient war rages between the rats and the frogs near Piper's Crick.  Neither side remembers how it started or even why, they simply know that the other is their mortal enemy.  Each side quests for a better weapon, spell, or artifact to rid this world of their most hated adversary.  And the frogs may have found the path to righteous victory first...

THUNDER FROG

"Aye, verily yon rat!  Yes, thou.  See how doth flesh burns with the call of my brother, the lightning.  And now your bones and organs are pulverized with the arrival of my sister, the thunder."

-The Thunder Frog, a literal gift from the Gods

2nd level [ANIMAL] 
Initiative: +6

By This Hammer +7 vs. AC - 5 damage
        Natural Even Roll: Target takes the escalation die in additional
        damage.

R: Blitz +7 vs. PD (1d3 nearby targets)  - 7 lightning damage

R: Donner +7 vs. MD - 7 thunder damage

        Natural 16+: Target is dazed.

Nastier Specials
Ride the Thunder: Thunder Frog may fly.

His Hammer Always Returns: Thunder Frog may make an additional attack each round.

AC 18

PD  16               HP 40

MD 14