Strange Larva Inscription Card. Always up to date with the latest patch. Considering eternity is probably based on tokoyo no kami, her name is probably a reflection of her origin as said kami.
Wrath of the lich king. While field mice is not the strongest card within inscryption itself, it has access to the most blatantly overpowered sigil in the entire game. However, the black goat can also be sacrificed at the altar of the bone lord to unlock a special boon.