Is Atraxi Warden legal in Standard, Modern, and Commander?

Atraxi Warden is legal in: Legacy, Vintage, Commander.

What type of card is Atraxi Warden?

Atraxi Warden is a Creature — Alien Eye. Its oracle text reads: "Flying When this creature enters, exile up to one target tapped creature. Suspend 5—{1}{W} (Rather than cast this card from your hand, you may pay {1}{W} and exile it with five time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)"

Atraxi Warden

Creature — Alien Eye

Flying

When this creature enters, exile up to one target tapped creature.

Suspend 5— (Rather than cast this card from your hand, you may pay and exile it with five time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)