Is Gerrard Capashen legal in Standard, Modern, and Commander?

Gerrard Capashen is legal in: Legacy, Vintage, Commander.

Gerrard Capashen

Q: What type of card is Gerrard Capashen?

Gerrard Capashen is a Legendary Creature — Human Soldier. Its oracle text reads: "At the beginning of your upkeep, you gain 1 life for each card in target opponent's hand. {3}{W}: Tap target creature. Activate only if Gerrard Capashen is attacking. Power/Toughness: 3/4"