Turkey's Power Shot is the Bubble Shot. This power shot is easy to block at any time but can be hard to counter if you're not used to it, as the ball does delay just a little bit before shooting. Turkey yells, "Buuubble shoot" and shoots a plethora of water in a constant stream. The ball is inside the water-cannon but has a delay like Argentina's. If the foe fails to counter or does not have power, he will be encased in a sarcophagus of water in the form of a bubble. You will float into the air and the ball will go through you leaving your goal vulnerable for a few seconds.
The water stream covers the ball in Turkey's Power Shot, but if you look really carefully, you can probably still see it and you know when the ball comes. If you still can't see the ball, you can block the ball intuitive after some practice. When Turkey uses his Power Shot, walk in front of him and jump to make the ball bounce into Turkey's goal. A good way to counter his attack is to jump and kick as quick as you can.