Once per turn, during either player's turn: You can discard 1 "Ninja" monster and 1 "Ninjitsu Art" card to target 1 face-up monster your opponent controls; this turn, that monster's effects are negated, also that monster cannot attack.
you're an idiot...this can prevent a gozuki or il blud or wyvern, warm worm...etc from activating their effect since the ninja effect can activate during either players turn. just be quiet before making stupid comments
Holy 🔥, some of you guys are 🔥ed. This can't negate Warm Worm or Wyvern, since they activate on graveyard. And even if it could, why the guck wouldn't you play Ultimate Providence that just needs a discard? I guess it's a compliment: to be hated by 🔥s that don't even understand the game.