Praos, The Warbringer

When this creature transforms into Praos,
The Warbringer, gain control of all Hydras.
Hydras you control attack each combat if able.
Attacking Hydras you control have Double Strike
and Trample.
{b}{b}{r}{r}: Regenerate each Hydra you control,
then put a +1/+1 counter on each of them.