It issues in the name of "The State of Texas", and shall be sufficient, without regard to form, if it have these substantial requisites:
1. It must specify the name of the person whose arrest is ordered, if it be known, if unknown, then some reasonably definite description must be given of him.
2. It must state that the person is accused of some offense against the laws of the State, naming the offense.
3. It must be signed by the magistrate, and his office be named in the body of the warrant, or in connection with his signature.