Kyogre

Skulk, Ward {4}, Reach, Menace,
{7}{u}: Monstrosity X(Activate this ability only
when you could cast a sorcery. Give this creature X
+1/+1 counters, this may only be used once. Max 5 counters)
This creature costs {x} less to cast. X is equal to
the highest amount of creatures in an opponents
graveyard.
This can only attack an opponent with the
highest life. If tied, you decide.