(2) During your Draw Phase, before you draw: You can declare 1 card type (Monster, Spell, or Trap)
This isnt about optimization or turbo-power, this is more about cutting out near-unplayables (Aerie Mystics is not a card I saw hit the table and do anything, ever)
But there is a known set sequence, which you can find on Bulbapedia: The Japanese release are ordered by the types first, then ascending rarity (Rare and Rare Holo are considered the same), then National Pokdex number, followed by Trainer and Energy cards
Genesis Dragon Type Effect Monster Attribute LIGHT Typing Dragon Level/Rank 6 ATK 2200 DEF 1800 Typings Effect TCG Date 2011-06-24 OCG Date 2008-10-21 Card Text Once per turn, you can send 1 Dragon-Type monster from your hand to the Graveyard to add 1 Dragon-Type monster from your Graveyard to your hand
If yes, the card tends to skew up in rarity