we discard our hand, shuffle it into our library, all our permanents phase out, and then all the subgame permanents hands and graveyards are exiled
This particular card is graded at a 9-Mint, meaning it's in a spectacular condition
The creatures that are on the battlefield will be affected as appropriate
Its not a surprise that Eldrazi decks are dominant in various archetypes aggro, midrange, and control but rest assured, its not a too dire of a situation
If one of the two other target creatures leaves the battlefield before Betrayal at the Vault resolves, the creature you control will still deal damage to the remaining other target creature
On real MTG cards, the result is a smooth finish that feels slick enough to shuffle, but not like cheap plastic