At least ten of them
Light of Day (T1, Ext, S, Block) Could there be a card that punishes most styles of black decks more
All Will Be One - All Will Be One - Artist's Proof All Will Be One - All Will Be One - Non Foil and Foil Magic the Gathering Artist Proof Card that has a white back
Theres also a bunch of cards in the deck Ardenn, Boros Charm, Komainu, Lion Sash, Silkguard , on top of all Auras that I didnt want to not work because one of the Swords on accident gave my creature protection from one of those colors
Ambiguity At least Ambiguity doesnt count the counterspells that have countered counter cards
Furthermore, Ephemerate also comes with the rebound mechanic: meaning it can be cast again at the beginning of your next upkeep for no cost at all