The purity seal is a type of amulet 'borrowed' from the Warhammer 40,000 military board game.
This was reported by the Telegram channel Christians Against War.
A wax or metal print with a fragment of a scroll was attached to the armor of a toy warrior. It was designed to protect the warrior from evil forces.
Two Russian calligraphers, Dmitry Sever and Dmitry Ratnik, adapted this form of amulet to the “Orthodox” version, having written Psalm 90 on the scroll.