Guardian of lost clarity

Attacking creatures get -1/0.
Creatures with first strike loose first stirke, the same is true for flying, deathtouch, double strike, haste, hexproof, indestructible, lifelink, menace, reach, skulk, trample, and vigilance.
Green smoke is all the guardian remembers seeing, yet it strives not to see what more there lies in this world for it is sworn to protect its post.