In the TCG, players have the freedom to construct their own decks, choosing from thousands of available cards featuring different Pokmon, Trainer cards, and Energy cards
The two cards are inspired by the Goldenrod Game Corner from Pokmon Gold and Silvers region of Johto, and trigger luck-based effects when used
The plan is to ramp up to Ouroboroid and collect as many creatures and +1/+1 counters as you can along the way
Thunderbird is the best of this archetype in the N/R lineup, as when it's discarded you can destroy a Set card on the field (be it a monster or backrow)
Back then, the only usable cards for the Deck were Heraldic Beast Aberconway and Heraldic Beast Amphisbaena , both try to let the deck get card advantage
This is also a good card for the 99 of Rakdos brews with cards like Mayhem Devil or a free form of sacrifice tied to a win-con and card flow in Orzhov or Golgari brews