Since these may radically (or not) change your tactics...<br/><br/><div class="spoiler_container"><div class="spoiler_header" onclick="hideSecond (this);" role="button">Knowledge for Desh</div><div class="spoiler_body"><strong>Green Woman</strong>: This is indeed a green hag, who have tough hides that provide strong armour against physical attack, and make them resistant to magic. <br/><strong>Troll</strong>: Nada, although my interpretation of the knowledge rules that giants should fall under knowledge: local and that any instances of it being knowledge: nature are left over typos from 3.5, so you can try with local if you want. <br/><strong>"Dog"</strong>: Definitely not a dog. <br/></div></div><br/><div class="spoiler_container"><div class="spoiler_header" onclick="hideSecond (this);" role="button">Knowledge for Skin</div><div class="spoiler_body"><strong>Humanoid</strong>: The Troll is actually a Flood Troll, a smaller species of semi-aquatic offspring that are sometimes born to scrags who have hides that become extremely tough when they are dry. <br/><strong>Monstrous Humanoid</strong>: This is a green hag. Their claws are able to sap away the strength of warriors who attack them.  <br/><strong>Outsider</strong>: No idea. </div></div><br/><br/>Also, you could use Knowledge: Religion in this case, if anyone wants to.