Effect: Focus on a creature you can picture clearly and try to possess it. You spend one die each on the first three rounds you focus on the spell. On the start of the first round, the target must make a WIL save or have its tongue and senses taken over: You can see, smell, hear, taste, and feel what it sees, smells, hears, tastes, and feels. You speak instead of the creature, which cannot speak. Meanwhile the senses and tongue of your own body don't function.
On start of the second round, the target must make a DEX save, or have its legs taken over: You can walk, swim, or fly using its body, but you can't perform any kind of action that doesn't involve pure movement, and your own body cannot move.
On the start of the third round, the target must make a STR save, or have its body taken over: You can perform any kind of action with the creature's body while your own becomes unable to act.
If all three saves fail, the possession lasts for a full watch, at the end of which the saves are repeated.
If any save involved in this spell succeeds, the spell fades, and the target creature gets a clear image of you in its mind.
If the creature is willing, it may choose to fail the saves, but it will still take three rounds to fully do. You may choose to let it take over your own while you possess the creature's body.
Recharge: Let the spirit trapped in the spell possess your body for three days. If your body dies during this time, you become the spirit powering the spell, which still recharges in the same three days since you let the spirit take your body.