Scavenger - access to cheaper crafting recipes
Iron Gear can be turned into Diamond Armor by adding various amounts of diamonds.
Iron Shovels specifically need one lapis lazuli to become a diamond shovel.
Rotten Flesh -> Leather Crafting Recipe
Bow Crafting Recipe -> 5 sticks, one string. Bow shape but top and bottom string is replaced with string.
Berry Soup -> Beetroot Soup crafted with Juicy Berriers

Sorcerer - can wield various spells at the cost of redstone
Fireball, Snowball, Egg, Arrow, Lava, Water, Fire, Lightning
are the names of the spells. Sign a written book with the name of a spell
to obtain the spell book.