Gremlin [Opus VII]

When your opponent discards a card from his/her hand due to your Summons or abilities, Gremlin also becomes a Forward with 7000 power and "When Gremlin is put from the field into the Break Zone, choose 1 Forward opponent controls. Dull it and Freeze it". (This effect does not end at the end of the turn. This ability will not trigger if Gremlin is a Forward.)