Level 8 DARK Winged Beast Effect Monster
You can reveal this card in your hand; your opponent randomly chooses 1 card from your entire hand, then you discard the chosen card. Then, if the discarded card was not “Danger! Thunderbird!”, Special Summon 1 “Danger! Thunderbird!” from your hand, and if you do, draw 1 card. If this card is discarded: you can target one set card your opponent controls; destroy it. You can only use this effect of “Danger! Thunderbird!” once per turn.
The article also confirms that it is a Secret Rare.