Adds +1 to Strength (thus, depending on prior Strength score, adding either 0/+1 To Hit in melee and either 0/+1 Damage with melee and thrown weapons) and suffer -1 to Will saving throws
Druid
Adds +1 to Dexterity (thus, depending on prior Dexterity score, either 0/+1 To Hit with ranged attacks, either 0/+1 to AC, and either 0/+1 to Reflex saving throws) and suffer -1 to Will saving throws
Adds +1 to Constitution (thus, depending on prior Constitution score, either 0/+1 to Fortitude saving throws and either 0/+1 to max HP per character level) and suffer -1 to Will saving throws
Adds +2 to AC and +1 to Dexterity (thus, depending on prior Dexterity score, either 0/+1 To Hit with ranged attacks, either 0/+1 to AC, and either 0/+1 to Reflex saving throws)