Vithsae, The Unrelenting

Vithsae, The Unrelenting enters the battlefield
with 6 +1/+1 counters.
Vithsae, The Unrelenting must attack each turn
if able.
Whenever Vithsae, The Unrelenting is dealt
damage, remove that many +1/+1 counter from
it and create a 0/1 green hydra-head creature
token.