Geralt, the Gwynbleidd

+2: Geralt, the Gwynbleidd deals 1 damage to each creature opponents control and 2 damage to each monster on the field.
0: Cast a sign from your hand without paying its mana cost
-10: Destroy every monster on the field. For each monster destroyed this way, Geralt, the Gwynbleidd deals 2 damage to each oponnent.