DeepDark Stone Colossus

Trample, deathtouch, first strike, protection from creature, instant, and sorcery,
Whenever a opponent cast a spell or you bock with this spell put a +1/+1 on DeepDark Stone Colossus.
{u/b}{p/b}: Regenerate DeepDark Stone Colossus.
{4}: DeepDark Stone Colossus gains infect until end of turn.