Deduct that weight from your original and you can get a good idea of how many thousand cards you are looking at
Rattleclaw Mystic also can be morphed, and adds one of each color when flipped up, which could be used to draw out a removal spell if your opponent is nervous about what you might have facedown on your battlefield
Clear set number, rarity, and clean corners Modern chase cards can move quickly, so recent sold comps matter more than old price guides
When building a deck, up to 10 points may be used
Thurid, Mare of Destiny -- Arguably the best typal commander for Pegasus, Unicorn, and Horse
I don't think you really want to be playing this in a Dragon-based deck, more of a spell slinger build with tons of cheap spells to spam the field with tokens