Is Thalakos Dreamsower legal in Standard, Modern, and Commander?

Thalakos Dreamsower is legal in: Legacy, Vintage, Commander.

Thalakos Dreamsower

Q: What type of card is Thalakos Dreamsower?

Thalakos Dreamsower is a Creature — Thalakos Wizard. Its oracle text reads: "Shadow (This creature can block or be blocked by only creatures with shadow.) You may choose not to untap this creature during your untap step. Whenever this creature deals damage to an opponent, tap target creature. That creature doesn't untap during its controller's untap step for as long as this creature remains tapped."

Creature — Thalakos Wizard

Shadow (This creature can block or be blocked by only creatures with shadow.)

You may choose not to untap this creature during your untap step.

Whenever this creature deals damage to an opponent, tap target creature. That creature doesn't untap during its controller's untap step for as long as this creature remains tapped.

Set Tempest

Rarity Uncommon

Mana Value 3

Artist Susan Van Camp

Collector # 92

Scryfall Gatherer