Is Duggan, Private Detective legal in Standard, Modern, and Commander?

Duggan, Private Detective is legal in: Legacy, Vintage, Commander.

Duggan, Private Detective

Q: What type of card is Duggan, Private Detective?

Duggan, Private Detective is a Legendary Creature — Human Detective. Its oracle text reads: "Duggan's power and toughness are each equal to the number of cards in your hand. Whenever Duggan enters or attacks, investigate. The Most Important Punch in History — {1}{G}, {T}: Duggan deals damage equal to twice its power to another target creature. Activate only once. Power/Toughness: */*"