It is the small symbol on the middle section of the card to the right end of the card type box
For more details on where these events will be run and the specific prizes they'll feature, check out this article
You also can't sacrifice it to pay a cost that requires you to sacrifice a permanent
My main concern is that may players do not pay attention to the backs when purchasing sub-$50 priced cards
The Pokmon ex mechanic, the main mechanic of this new era, continues in Snow Hazard and Clay Burst , as does the layout of the Secret Rare section, which includes Illustration Rares, Special Illustration Rares, Full Art ex, Full Art Trainers, Special Illustration Rare Trainers, and Gold Hyper Rares
Aurorus ramps this up, locking the defending Pokmon out of attacking altogether, and dealing 150 damage to them using "Freezing Chill"