Is Dakra Mystic legal in Standard, Modern, and Commander?

Dakra Mystic is legal in: Modern, Pioneer, Legacy, Vintage, Commander.

Dakra Mystic

Q: What type of card is Dakra Mystic?

Dakra Mystic is a Creature — Merfolk Wizard. Its oracle text reads: "{U}, {T}: Each player reveals the top card of their library. You may put the revealed cards into their owners' graveyards. If you don't, each player draws a card."

Creature — Merfolk Wizard

, : Each player reveals the top card of their library. You may put the revealed cards into their owners' graveyards. If you don't, each player draws a card.