There are multiple ways to earn more free packs, and youll get some simply by playing the game
On turn 3, youre ahead of the curve, and on the following turn you can play a 4-power threat like Scrapshooter to attack with this vehicle quickly
If you don't have anything in the graveyard or your opponent is playing a creature-heavy deck, one step might fizzle
I try to make sure I end up with 4-6 lands, 4-5 card draw spells, and as much removal as I can get my hands on (which does make it a higher pick usually)
The unblockablity that comes from protection from creatures makes this one of the best initiative cards at keeping the initiative: Your opponents cant stop you from dealing combat damage to slip further into the Undercity
This ability also triggers at the beginning of your combat phase, meaning it happens the turn it enters play