Must be Special Summoned with "Mask Change" and cannot be Special Summoned by other ways. Any card sent to your opponent's Graveyard is banished instead. Once per turn, if your opponent adds a card(s) from their Deck to their hand (except during the Draw Phase or the Damage Step): You can banish 1 random card from your opponent's hand.
How to Get
Banishes from your opponent's hand / Banishes from your opponent's field / Banishes from your opponent's Deck
No Fusion Materials / Nomi / Cannot be Fusion Summoned
Realistically, Dark Law's weaker here than it is in the TCG/OCG. There isn't anywhere near as much search or GY reliance in Duel Links, and its low ATK is more of a liability. I'd probably consider it slightly beyond our power level, but not out of the realms of possibility. It's the kind of thing I could definitely see happening within the next year, just maybe not the next couple of months.
thinking that because the most versatile and expensive trap cards in the game that counter literally everything would also counter dark law would make him not that strong is the most retarded thing I've read all day