Is Wall of Shards legal in Standard, Modern, and Commander?

Wall of Shards is legal in: Modern, Legacy, Vintage, Commander.

Wall of Shards

Q: What type of card is Wall of Shards?

Wall of Shards is a Snow Creature — Wall. Its oracle text reads: "Defender, flying Cumulative upkeep—An opponent gains 1 life. (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.)"

Snow Creature — Wall

Defender, flying

Cumulative upkeep—An opponent gains 1 life. (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.)

Set Coldsnap

Rarity Uncommon

Mana Value 2

Artist Alex Horley-Orlandelli

Collector # 23

Scryfall Gatherer