I have a creature with protection from green in play along with another creature. My opponent plays a green spell that targets a creature I control chosen at random and does damage to it. Does the protection make the creature with protection an invalid target for said spell (automatically targeting my only other creature), or is there a 50/50 chance the protected creature will be targeted resulting in the spell being countered?
Edit for clarification (targeted @ the discussion in the comments) The situation is slightly different than depicted (was posted via phone, couldn't easily provide links etc)
I have a Woodlot Crawler in play along with another creature. My opponent plays Scab-Clan Giant, and its ability triggers. Question is whether my Woodlot Crawler is a legal target for the triggered ability.