Four Knocks is like a white Phyrexian Arena for a couple turns, and you can blink it to make it last longer or retrieve it with Sun Titan effects
Put the remaining four on top of your library in any order. For just one Black and one Blue Mana, this was a great early play, to set up your draw, if you had the required Mana
Quick expansion: Slumbering Dragon, Dragon Egg, Crucible of Fire, Dragons Hoard, Dragon Tempest, Scourge of Valkas, Thunderbreak Regent, Knollspine Dragon, Dragon Mage, Dragon Roost, Form of the Dragon Goal cards: Utvara Hellkite, Sarkhan, Fireblood Tribal commander: Zirilan of the Claw or Lathliss, Dragon Queen ELVES The pointy-eared ones are one of the games OG tribes, and perhaps its most consistently represented
Three things in life are inevitable: death, taxes, and Charizard Pokmon cards spiking to ludicrously high prices