They usually have an easy way to remember that they've been activated, though, whether that's putting a counter on the permanent with the ability or creating a tricked-out token
This would be bad enough if they were your first four turns of the game, but just imagine how much worse it can be if you're only able to start your engine on the third or fourth turn
Black Round or Square Corner Shiny Filler Card from English Urza's Legacy Foil Common / Uncommon 10 x 11 uncut sheet printed by Yaquinto Printing Company close up
It doesn't copy whether that permanent was tapped or untapped, whether it had any counters on it or Auras attached to it, or any non-copy effects that changed its power, toughness, types, color, and so on
Theyre classified as Basic GX cards, meaning they hit hard and have stunning artwork