Is Wave of Rats legal in Standard, Modern, and Commander?

Wave of Rats is legal in: Legacy, Vintage, Commander.

What type of card is Wave of Rats?

Wave of Rats is a Creature — Rat. Its oracle text reads: "Trample When this creature dies, if it dealt combat damage to a player this turn, return it to the battlefield under its owner's control. Blitz {4}{B} (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)"

Wave of Rats

Creature — Rat

Trample

When this creature dies, if it dealt combat damage to a player this turn, return it to the battlefield under its owner's control.

Blitz (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)