
You may have this creature enter as a copy of a creature or planeswalker you control, except it enters with an additional +1/+1 counter on it if it's a creature, it enters with an additional loyalty counter on it if it's a planeswalker, and it isn't legendary.
Spark Double has 11 printings, first in War of the Spark (2019). EDHREC ranks it #370 among Commander cards. It appears most in Doctor Doom, King of Latveria decks (7,581 on EDHREC). 3 public decks on TCG run it. It has 9 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.