First, your spells cannot be countered, this is great to protect with countermagic and then you won't have to save your Counters for resolving key things moving forward
If this card is sent from the field to the GY: You can add 1 "Black Dragon Collapserpent" from your Deck to your hand
The next player in turn order sequence now takes their turn starting with the first action noted above
If you are wondering why left/right but not top/bottom has a chance to be forgiven for flaws, its because PSA slabs will "hug" the left/right of a pokemon card size perfectly but there will be some room top/bottom for the card and corners are wide open to view
If you want a true master set, youll need every one of these, no exceptions
Source: The Official Pokmon YouTube Channel Released October 30, 2024 Developer(s) DeNA, Creatures Inc