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
Notably, this effect isnt capped at triggering only once each turn
Brand: Pokemon Company: Pokemon USA Series: Shrouded Fable Release Date: August 2, 2024 Item Type: Single Card UPC: 0665096721859 Stock #: 499510 Our Guarantees to You, Our Valued Customer
But as Wizards points out, the format is in a very different place to where it was even a couple of years ago
If you have multiple copies of Unholy Annex on the battlefield, each one will trigger potentially burning your opponent for a ton of life
A 6/6 with vigilance and trample is a formidable attacker, but the Owlbears triggered ability is eye-popping: other legendary creatures you control get +2/+2 and gain trample until end of turn