Eight is typically too much to pay unless it wins you the game on the spot, and I think Ardyn is just too vulnerable to be as good as the other expensive bombs in this set like Summon: Knights of Round and Summon: Bahamut
No one else will be able to verify you did it correctly, but we'll give you the benefit of the doubt
Radiant cards are another type Rule Box mechanic with the stipulation that you can only utilize one Radiant Pokemon in your deck
Block Icon 2 Effect [Counter] If you have 30 or more cards in your trash, add up to 1 card from the top of your deck to the top of your Life cards
If only you were a reanimator deck doing the things you need to wait a minute
In our build we have enough artifacts to get enough value, and Gold-Forged Thopteryx is an artifact itself, so on EtB, it even triggers the token creation of Alela, Artful Provocateur