Today's batch of Q&A clears up some unanswered questions regarding the powers of the Protoss. Like in the last batch, Karune starts with a chat with developers:

Chat with Devs:
For this batch, Ive been fortunate to snag some time with our Lead Writer for StarCraft II, Andy Chambers, and I had a chance to talk to him about what happens to Protoss warriors after they die. On the forums, there has been much speculation to what the true meaning of the blue flash of light that is seen when a Protoss Zealot dies. Furthermore, have you ever wondered how exactly an EMP burst would have an effect on Psi energy? Andy gives us insight into the Protoss ways in fan questions 1 and 3.

Gameplay Blog:
Force Fields are my new favorite ability! During my latest skirmish with a Zerg opponent, I was rushed early with Zerglings. The Protoss Nullifiers (previous known as the Stasis Orb) and their 15 second Force Field ability saved the day. As the attacking Zerglings charged up my ramp on the classic Lost Temple map, I simply created a Force Field in between the group of Zerglings, separating his attacking force. With their numbers divided, my Zealots easily took care of the split force of Zerglings, allowing me to make a decisive counter-attack. In subsequent games, I have found that the Force Field is quite useful in many situations, as you are able to create your own choke points, separate incoming armies, and also erect barriers as needed for your Protoss Stalkers to take advantage of their Blink ability. Furthermore, the Force Field can provide another obstacle for melee units approaching your Colossus, whereas your Colossus is able to step over the Force Field at ease. These Protoss Nullifiers at tier 1 are now one of your most effective defenses to an early game rush. Currently, the Force Field ability costs 30 energy with the Nullifiers energy capacity at 100. Next batch, well see if we can find some interesting games with the Nullifiers other new ability, the Null Void.

And now the answers to the questions:

Do Protoss warriors actually die? What is the blue flash when they die?

In the chaos of the battlefield, Protoss warriors fight with tremendous power and grace, but even so, they can be mortally wounded. Then the Protoss' foes often bear witness to a startling sight: the injured Protoss disappears in a bright flash of light. Such a vision has caused primitive races to quail in superstitious fear, and yet it has no supernatural cause. On the contrary, it is merely the result of teleportation, which is one of the chief strengths of Protoss technology. Protoss warriors typically have teleport mechanisms built into their armor. If the warrior is sufficiently injured, a properly functioning mechanism will automatically teleport the body to the nearest safe haven.

A Protoss warrior who is badly injured but still living may be placed in a dragoon--or latterly an immortal--shell to continue to fight. This is the choice of the individual warrior. Some warriors elect to shoulder the burden of remaining among the living instead of joining the sum of Protoss lives embodied in the Khala. It is worthy of note that the lives of individual Protoss that have passed into the Khala are no longer coherent entities, and the Protoss cannot speak with their dead per se. However, there are memories and strands of experience that can be accessed. Only the most skilled Protoss preservers can locate and follow specific desired strands of knowledge. The tremendous value of preservers comes from the fact that they carry within themselves and can access the sum total of Protoss experience at an individual level.

Will there be more ways to give energy(mana) to a caster?

Protoss casters will have an ability to transfer energy from one caster to another. This ability will allow for a lot of micromanagement opportunities to maximize the amount of energy to a single caster, for the maximum number of special abilities casted.

On what kind of energy are based Protoss shields? If they are based on PSI energy, how can be possible for a Terran EMP attack to drain their energy?

Protoss energy sources are highly esoteric because their starting point was the Protoss' use of their own psionic powers to protect themselves; to charge their tools and weapons; and to make, manipulate, or meld matter. Over time technological advances have enabled the Protoss to mimic these psionic processes to the extent that the Protoss can now construct inorganic devices to tap into the same universal processes to power shields, drives, weapons, and robots. Thus, for example, the energy field projected by a pylon that powers Protoss structures cannot truly be called psionic in nature, just as the shields protecting a zealot are not purely technological constructs. Rather, the two processes are so closely interlinked that they are almost the same. As a result, Protoss power sources and particularly their shields are vulnerable to disruption by technological means such as EMP weapons. Similarly such power sources can be restored or recharged from artificially stored energy.

Are you planning to make another statue, for example, statue of Kerrigan?

We are planning to fully explore the high end collectibles realm with plenty of StarCraft II merchandise, and yes, there are projects already in the works.

Official Starcraft II Forums