Is Mudslide legal in Standard, Modern, and Commander?

Mudslide is legal in: Legacy, Vintage, Commander.

Mudslide

Q: What type of card is Mudslide?

Mudslide is an Enchantment. Its oracle text reads: "Creatures without flying don't untap during their controllers' untap steps.At the beginning of each player's upkeep, that player may choose any number of tapped creatures without flying they control and pay {2} for each creature chosen this way. If the player does, untap those creatures."

Enchantment

Creatures without flying don't untap during their controllers' untap steps.<br>At the beginning of each player's upkeep, that player may choose any number of tapped creatures without flying they control and pay for each creature chosen this way. If the player does, untap those creatures.

Set Ice Age

Rarity Rare

Artist Brian Snõddy