Moss, Golgari Bulwark

{b/g}{b/g}: Prevent all combat damage dealt to
Moss, Golgari Bulwark this turn.
{b/g}{b/g}{b/g}{b/g}: Moss, Golgari Bulwark gains
+4/+0. Activate this ability only once each
turn.
"Trust me, the undercity is the safest route."