Is Dream Fighter legal in Standard, Modern, and Commander?

Dream Fighter is legal in: Legacy, Vintage, Commander, Pauper.

Dream Fighter

Q: What type of card is Dream Fighter?

Dream Fighter is a Creature — Human Soldier. Its oracle text reads: "Whenever Dream Fighter blocks or becomes blocked by a creature, Dream Fighter and that creature phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.)"

Creature — Human Soldier

Whenever Dream Fighter blocks or becomes blocked by a creature, Dream Fighter and that creature phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.)

Set Mirage

Rarity Common

Artist Drew Tucker