Is Herald of Serra legal in Standard, Modern, and Commander?

Herald of Serra is legal in: Legacy, Vintage, Commander.

Herald of Serra

Q: What type of card is Herald of Serra?

Herald of Serra is a Creature — Angel. Its oracle text reads: "Flying, vigilance Echo {2}{W}{W} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)"

Creature — Angel

Flying, vigilance

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Set Urza's Saga

Rarity Rare

Mana Value 4

Artist Matthew D. Wilson

Collector # 17

Scryfall Gatherer