Up until now, this is a pretty obscure interaction which only came up in formats that play Urza's Saga and Blood Moon
[1] Common cards have relatively simple mechanics and abilities, since they serve as the basic building blocks for any Lorcana deck
The cost reduction gives you free equips on lots of strong equipment like the Mirrodin Swords, Umezawa's Jitte, and so on
It doesn't matter if the attacking creatures are still attacking or even if they are still on the battlefield
It is quickly summoned to be quickly tossed away, but that act allows the player to banish any opposing villain character
FINAL FANTASY: BLUE Edgar, King of Figaro is just a six mana hand refill in any kind of deck that generates a lot of artifacts, whether that be Thopters, Food, or Constructs