I don't think it's necessarily strong, but I don't think comparing it to Raging Goblin is right. Sure, it's a 1/1 with haste for 1 mana, but... 1) there is a real difference between a mana cost of {1} and a mana cost of {r}; 2) it is conditionally evasive, so in the mid to late game, when Raging...