If this card is destroyed by your opponent's card (either by battle or by card effect), your opponent cannot Special Summon a monster, or activate Spells, Traps, Spell/Trap card effects, or Monster Card effects, for the rest of this turn.
How to Get
Activates from your Graveyard
Prevents activation of your opponent's Effect Monsters / Prevents activation of your opponent's Spell Cards / Prevents activation of your opponent's Trap Cards
Prevents your opponent's Special Summons
Anonymous 9days ago
Watts are unwhelimg in tgc but if more comes maybe they can be fun in duel links
I never play the game so I don't know the story, but based on their decklist, it seems the Duel Academy version of Rua and Ruka have a story where they accidentally have their deck swapped, resulting in Rua running Ruka's Watt deck and Ruka running Rua's Batteryman deck.
Basically, Ruka has a Watt deck in TF5, although she never gets to use it.