Ple-Sen
Auto-translated
Well, it's quite clearly stated there. A creature can perform a specific action, such as casting a spell, moving, or moving and attacking. However, the spell, in the turn it's cast, won't consume that action slot, and therefore, its effect will take place in the following turn. This means the creature can move away from its allies and then, obeying the spell's effect, proceed to attack anyone within reach.