Initially, Media Factory did not intend to print Pokemon cards with any rarity symbols and this is evident in all marketing materials prior to release
During your Main Phase: You can send this card on the field to the GY along with 1 or more non-Tuner "Blackwing" monsters from your Deck, so that the total Levels sent equal exactly 8, and if you do, Special Summon 1 "Black-Winged Dragon" from your Extra Deck, also you cannot Special Summon from the Extra Deck for the rest of this turn, except DARK monsters
When you declare a creature as an attacker, you need to tap it
They are all pretty useful Swiss army knives
Do note, this ability is not a may ability either, so you are forced to draw those cards
Some collectors may choose to focus on specific sets or series of cards