Again, if I announce I'm going to play a specific supporter and don't have it in my hand, does that stop me from playing supporters for the turn?
Now, this is a different scenario, as I see it, as the Supporter is not truly "played" until it touches the table, and you LET GO (this is the method that I believe should be used in tournaments.. the "touch rule"). Merely announcing something does not make it so. For example, does muttering out loud, "... play my Copycat..." constitute an act of play, or an allowed thought process? The same should apply if someone muttered, "...Do the Wave..." Is the common practice of speaking out loud considered now "announcing?" I don't think so.
There is a difference between the Supporter and the Attack. Even if one were to say to the opponent, "I play Celio's" but no Celio's touched the table, does your opponent have the right to see your hand to make sure you DON'T have a Celio's? I don't think so.
With an attack, knowledge is already on the table. If opponent announce, "Do the Wave," he has literally "done the Wave."
But, as you say, what if the Wave is unable to be done? First, let's dispense with the absurd. If opponent's Active Pokemon doesn't do the Wave, then he's done nothing except been ridiculous, whether intentionally or unintentionally.
Second, more to the point, what if opponent doesn't have the right energy? Is his turn over? MAYBE.
Opponent certainly has announced (even if not verbally), "I attack with Furrett, and do the Wave." Simply because opponent cannot do the Wave doesn't meant that he hasn't (in some manner) announced that he's attacking with Furrett.
Further, if an opponent has Furrett Active with NO Energy, and announces Do the Wave, isn't he truly done with his turn? Basically, hasn't he passed? I mean, I've had people say to me, "Zap with Raichu" when they had no energy, and their MEANING was, "Your turn."
What if someone announces "Do the Wave" without proper energy and I just draw a card because they obviously can't do the Wave? Am I to be penalized because I went forward with the game?
Yes, I understand there is SOTG also, and one should say, "You can't do that." But then where is
their SOTG? Shouldn't they say, "OK, your turn." But if they want to be competitive, don't I have that right also? In a tournament then, being competitive, shouldn't I simply draw my card after opponent announces his attack which he can't do?
If opponent says, "Hey what about damage?" isn't it competitively legal (but not SOTG) to say, "Sorry, you don't have the energy for that attack" so we're moving forward?
I'm sorta taking both sides here, but let's see where it goes.