Yes, casting costs or activated ability costs or triggered ability costs (such as Steamflogger Service Rep, although I think that's the only silver-border card with a triggered ability that has a mana cost, and it's generic so Underdome's colorless mana ability would work too)
The whole family fits thematically in my Christmas deck, but Unglued didn't have foils and I've made the deck strictly 100% foil. I've got a foil Infernal Spawn of Infernal Spawn of Evil in the deck right now, but he misses his dad.
Two Score, Minus Two or: A Stargate Tail
(Image by totallynotabrony)
The whole family fits thematically in my Christmas deck, but Unglued didn't have foils and I've made the deck strictly 100% foil. I've got a foil Infernal Spawn of Infernal Spawn of Evil in the deck right now, but he misses his dad.
Two Score, Minus Two or: A Stargate Tail
(Image by totallynotabrony)