Is Cold Snap legal in Standard, Modern, and Commander?

Cold Snap is legal in: Legacy, Vintage, Commander.

Cold Snap

Q: What type of card is Cold Snap?

Cold Snap is an Enchantment. Its oracle text reads: "Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)At the beginning of each player's upkeep, Cold Snap deals damage to that player equal to the number of snow lands they control."

Enchantment

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)<br>At the beginning of each player's upkeep, Cold Snap deals damage to that player equal to the number of snow lands they control.

Set Ice Age

Rarity Uncommon

Artist Randy Gallegos