Fiendsmith Engraver effect, shuffle Moon of the Closed Heaven from graveyard into deck as cost, Special Summon itself from graveyard
If you're feeling lucky you might pull one of the 500 serialized Headliner cards, because nothing says "flex" like a dragon with a number stamped on it
You choose whether or not to cast one of the exiled cards as Crabomination's triggered ability resolves
Merciless Eviction [Vampire deck]: This is a fantastic card in commander
Promotional cards and items will vary by location but may include Glass Trumpet from Pokmon TCG: Scarlet & VioletStellar Crown, Drakloak from Pokmon TCG: Scarlet & VioletTwilight Masquerade, Colresss Tenacity from Pokmon TCG: Scarlet & VioletShrouded Fable, and Professors Research from Pokmon TCG: Sword & Shield
This can lead to lost or ruined cards which defeats the entire purpose of buying a box in the first place