Here's a link to a good summoning guide, which will be useful for you. Just for 25 to 40, here's how you should use your charms. Gold: Granite Crabs Green: Compost Mounds, Beavers (at 33) Crimson: SAVE THESE! Trust me, you'll want to train above 40 eventually, and you'll thank me later. Blue: Same as crimsons.