Snailosaurus Rex

My home is my castle: Snailosaurus Rex enters the
battlefield with 4 house counters on it. For each
house counter on it, it has ward {1}. Whenever
Snailosaurus Rex takes damage or is targeted by
a spell, remove a house counter from it.
Big bite: Whenever Snailosaurus Rex deals damage
to a creature put a -1/-1 counter on that creature.
"Ach Klaas, run, its the Snailosaurus Rex!"