Is Silent-Blade Oni legal in Standard, Modern, and Commander?

Silent-Blade Oni is legal in: Legacy, Vintage, Commander.

Silent-Blade Oni

Q: What type of card is Silent-Blade Oni?

Silent-Blade Oni is a Creature — Demon Ninja. Its oracle text reads: "Ninjutsu {4}{U}{B} ({4}{U}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever this creature deals combat damage to a player, look at that player's hand. You may cast a spell from among those cards without paying its mana cost. Power/Toughness: 6/5"

Creature — Demon Ninja

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever this creature deals combat damage to a player, look at that player's hand. You may cast a spell from among those cards without paying its mana cost.

Power/Toughness: 6/5

Set Outlaws of Thunder Junction Commander

Rarity Rare

Mana Value 7

Artist Steve Prescott

Collector # 241

Scryfall