Is Reaper of Flight Moonsilver legal in Standard, Modern, and Commander?

Reaper of Flight Moonsilver is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Reaper of Flight Moonsilver

Q: What type of card is Reaper of Flight Moonsilver?

Reaper of Flight Moonsilver is a Creature — Angel. Its oracle text reads: "Flying Delirium — Sacrifice another creature: This creature gets +2/+1 until end of turn. Activate only if there are four or more card types among cards in your graveyard."

Creature — Angel

Flying

Delirium — Sacrifice another creature: This creature gets +2/+1 until end of turn. Activate only if there are four or more card types among cards in your graveyard.

Set Shadows over Innistrad

Rarity Uncommon

Mana Value 5

Artist Magali Villeneuve

Collector # 36

Scryfall Gatherer