If I understood well what you're reporting, there is no bug in here.
What you say is, it's drawing cards, right? I don't know what is written in German, maybe this is the issue.
As Robratt told, it's an attack. The text (in English) reads:
[Colourless energy] If you go first, you can use this attack on your first turn. Draw 2 cards.
It's an attack with no damage and what the attack does is: Drawing 2 cards. Then ends the turn as (almost) every attack does.
In addition, it states that, "If you go first, you can use it on first turn". And that's because, rules doesn't allow to attack 1st turn going 1st. So this specify that this attack is possible. It have some sense as you're anyway, not damaging opponent so getting 2 cards is good but it's not a clear advantage on KOing, although there are some cards that allows that (for example Latios-EX ROS58).
So, (and I checked the vid), is just doing what is supposed to do. Have 1 energy, attack, draws 2, and turn goes to you.
Would be different stating: You can use this attack only if you go first. Or, You can use this attack only in your 1st turn.
Just for you to know, although it's not a link, posting those is not allowed, unless they are official Pokémon website links. Don't know if they are going to remove it.
And just for future reference, use the Set name, this way: Deoxys ROS 33 (or Roaring skies 33) [Drachenleuchten 33]. It's easier to find any card as we don't use to know how much cards have every set (ROS is 108 without the SRs).
Edited by Chasista, 10 April 2018 - 10:05 AM.
WE WANT LEGACY TOURNAMENTS BACK !!! If you also want it, show your support http://forums.pokemontcg.com/topic/55966-feedback-making-it-easier-to-get-the-cards-you-want/
My 1st pokémon VGame http://forums.pokemontcg.com/topic/59894-my-1st-pok%C3%A9mon-videogame-nds-diamond-story-and-help/
Foro en español, también existe: http://forums.pokemontcg.com/forum/2-español/