Is Energy Vortex legal in Standard, Modern, and Commander?

Energy Vortex is legal in: Legacy, Vintage, Commander.

What type of card is Energy Vortex?

Energy Vortex is an Enchantment. Its oracle text reads: "As Energy Vortex enters, choose an opponent.At the beginning of your upkeep, remove all vortex counters from Energy Vortex.At the beginning of the chosen player's upkeep, Energy Vortex deals 3 damage to that player unless they pay {1} for each vortex counter on Energy Vortex.{X}: Put X vortex counters on Energy Vortex. Activate only during your upkeep."

Energy Vortex

Enchantment

As Energy Vortex enters, choose an opponent.<br>At the beginning of your upkeep, remove all vortex counters from Energy Vortex.<br>At the beginning of the chosen player's upkeep, Energy Vortex deals 3 damage to that player unless they pay for each vortex counter on Energy Vortex.<br>: Put X vortex counters on Energy Vortex. Activate only during your upkeep.