If the opponent Kaalia attacked is no longer in the game when its ability resolves, you may put an Angel, Demon, or Dragon creature card onto the battlefield tapped, but it won't be attacking anyone and it won't be an attacking creature
cards you have in play is equal to or less than your opponents Don
Boy, do we have the crossover to end crossovers with this set
Id recommend searching for the same card on TrollandToad (search bar is in the left rail) and TCGPlayer (search bar is at the top of the page) as a starting point given they are two great sites for buying Pokmon cards
I cant speak for the rest of the group, but Im having a blast
It not only lets you turbo into influential Rank 4s like Lightning Plover and Harpie's Pet Mirage, but also can get any other Rank 4 or simply gather material for a Synchro Summon or even a surprise OTK