As long as Aerodactyl is in play, it grants you what is essentially a free PlusPower every turn
Creature - Faerie Color tag templates(None) Jaya Ballard, Task Mage , , Discard a card: Destroy target blue permanent
Like almost everything in collectibles, art is subjective
Although they'll eventually be your opponents in the tournament, ideally you wouldn't fight for colors with the drafters next to you, because doing so would wind up making both of your decks worse
II Destroy target artifact an opponent controls
You may want to save it for later turns where you'll have mana to cast the card you exile, or you might want to see all your options first before making your move