Sigil of Silence is a rare Demon Hunter spell card that belongs to the "Forged in the Barrens" set, which was released on 30.03.2021 and is one of initially 135 cards. The artist of this card was Vlad Botos, who also made 44 other artworks for Hearthstone.
The flavor text of the card is the following: A little heard-of spell.
The card is on average to memorize with 76.74% of correct quiz questions.