Special illustration cards seem to replace one of the two reverse-foil cards rather than the rare or holo-rare slot, so you could get lucky and get a special illustration Pokmon ex and a full art Pokmon ex in a single pack (I think?), but the odds would be pretty small, and thats only because the special illustration card replaces a different foil-style card of the 3 foil-style cards
It can't be the target of Zealous Lorecaster's triggered ability ("When this creature enters, return target instant or sorcery card from your graveyard to your hand.")
Dark Contract with the Eternal Darkness X TRAP Continuous While you have 2 "D/D" cards in your Pendulum Zones, your opponent cannot target monsters on the field with Spell/Trap effects, Tribute them for a Tribute Summon, nor use them as Materials for a Fusion, Synchro, or Xyz Summon
The ability to bounce any permanent allows decks to cover their bases, gives you the option to position things early or in a waiting game by bouncing a land and it makes sure that you'll get to trigger the discard effect