Syphon Essence⁣ - Innistrad: Crimson Vow⁣ (Common)⁣ [84]

Syphon Essence allows you to counter a creature or planeswalker spell, stopping your opponent's threat in its tracks. In addition to this, it creates a Blood token, which you can use to discard a card and draw a new one, providing you with some card filtering and potential value. This card is particularly useful in controlling decks where managing the board state is crucial, but it does require you to spend three mana, meaning it might not be as effective in faster-paced games where you need immediate answers.