The last charm is the body armor charm created with an earthen armor spell. It creates a thick layer of earth around its users that can protect them from physical blows and adverse physical conditions.
Speed is reduced but this body armor charm lasts until it is destroyed as opposed to the temporary protective charm. An Alpha has used it to survive the anger of a pack leader before. That was the moment that his name began to terrorize the mountain range.
All four of his blessings are very powerful since he is a Mana entity so it is like a cheat for vitality core stage refiners to have. So they are very popular. They are also very rare and precious since he is the only one capable of making them.