Simultaneous turn in a turn-based strategy game.

Is it possible to implement this in the SoD?

Technically, there are no problems with this. But are everyone ready to play against Shakti, who always has 3 stacks? :D To implement something like this in SoD, you either need to balance the number of units in the starting army (which is almost impossible given the current community), or introduce a software ban on certain heroes.