Despite the wording, it can be played if the player has no other cards to discard
Whenever a creature you control of the chosen type enters the battlefield or attacks, draw a card
Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.) 3/4 Illustrated by Jonathan Kuo Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Thundermaw Hellkite will deal 1 damage to all opposing creatures with flying, which wipes out all X/1 blockers such as 1/1 Spirits or some Fairies
So, while you might have to outbid many people to get some prized cards, you can rest assured that youre getting the real deal
Finally, the deck features a number of utility spells including mana rocks, strong removal effects, card draw effects, and anthem effects for your artifacts