Okay, first of all, it's a bit more complicated than that.
A beast is capable of some very limited independent actions without using powers, like taking OA's, or acting if the ranger is unable to act (but then, only to take actions that directly pertain to rescuing the ranger).
Also, many ranger powers designed for beastmaster builds DO allow the ranger and the beast to attack simultaneously, or for one (or both) to move and then attack...or for the beast to take special actions like charging, tripping, sonic 'howl' attacks and so on. So basically, most of the fun stuff you'd want to do with a beastmaster ranger are in the powers.
Why is that?
The ultimate economy of 4e combat is called "the economy of actions." In 3e there were many ways to gain multiple actions in a turn. The designers of 4e decided that they wanted things to be simpler. One character, one standard action per turn. Summon something? Fine. Still have just one standard action per turn. Have a familiar? Ditto. Animal companion? Awesome...still just one standard action per turn. You can use your Action Point, of course. But the idea is that just because your character has an associated critter doesn't mean you get twice as many actions per turn as the poor schmoe who doesn't.
This affects Talashia too. She now uses her actions to direct Shazi. He doesn't give her any more actions per turn either.
A beast is capable of some very limited independent actions without using powers, like taking OA's, or acting if the ranger is unable to act (but then, only to take actions that directly pertain to rescuing the ranger).
Also, many ranger powers designed for beastmaster builds DO allow the ranger and the beast to attack simultaneously, or for one (or both) to move and then attack...or for the beast to take special actions like charging, tripping, sonic 'howl' attacks and so on. So basically, most of the fun stuff you'd want to do with a beastmaster ranger are in the powers.
Why is that?
The ultimate economy of 4e combat is called "the economy of actions." In 3e there were many ways to gain multiple actions in a turn. The designers of 4e decided that they wanted things to be simpler. One character, one standard action per turn. Summon something? Fine. Still have just one standard action per turn. Have a familiar? Ditto. Animal companion? Awesome...still just one standard action per turn. You can use your Action Point, of course. But the idea is that just because your character has an associated critter doesn't mean you get twice as many actions per turn as the poor schmoe who doesn't.
This affects Talashia too. She now uses her actions to direct Shazi. He doesn't give her any more actions per turn either.