Even McDonalds struggled to keep cards in stock while they ran a Pokmon promotion
During your End Phase: You can add 1 Level 8 or higher Dragon monster from your Deck to your hand
Sure, MulldrifterMulldrifter has been around longer and has been printed way more than the Horizons Elementals, but it has staying power because drawing cards is one of the most powerful things you can do in the format, and because it takes a light breeze to blink, reanimate, bounce, replay, or otherwise reuse this
[10] Standby Phase : No specific action occurs, but players may activate or resolve card effects and maintenance costs during this phase
In fact, all upcoming content for the app to the end of January was leaked in detail right after the Mythical Island expansions came out
With 12 Collector Boosters and 1 foil box topper card, you're guaranteed to find something special in every pack