Is Archery Training legal in Standard, Modern, and Commander?

Archery Training is legal in: Legacy, Vintage, Commander.

Archery Training

Q: What type of card is Archery Training?

Archery Training is an Enchantment — Aura. Its oracle text reads: "Enchant creature At the beginning of your upkeep, you may put an arrow counter on this Aura. Enchanted creature has "{T}: This creature deals X damage to target attacking or blocking creature, where X is the number of arrow counters on Archery Training.""

Enchantment — Aura

Enchant creature

At the beginning of your upkeep, you may put an arrow counter on this Aura.

Enchanted creature has ": This creature deals X damage to target attacking or blocking creature, where X is the number of arrow counters on Archery Training."