Is Tempest Technique legal in Standard, Modern, and Commander?

Tempest Technique is legal in: Legacy, Vintage, Commander.

Tempest Technique

Q: What type of card is Tempest Technique?

Tempest Technique is an Enchantment — Aura. Its oracle text reads: "Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies. Copies become tokens.) Enchant creature you control Enchanted creature gets +1/+1 for each enchantment you control."