Artorias, the Abysswalker

Whenever Artorias the Abysswalker attacks or
blocks, put a -1/-1 counter on it.
If Artorias the Abysswalker is attacking or
blocking, it gets +2/+2 for each -1/-1 counter
on it.

Those who travel through the abyss should be wary,
for the abyss will travel through them.