So right now after playing some Piranas i found 2 things that they are rather week in:
The really good cards have rather low power. Smokey Tula Tyd all have 4 or less which is good for their star level but not great overall. Also they lack a reliable SOA that could actually do some damage.
So i thought to pair them up with gheist who have the SOA factor and great Damage.
I was thinking about a deck like this: