Is Securitron Squadron legal in Standard, Modern, and Commander?

Securitron Squadron is legal in: Legacy, Vintage, Commander.

What type of card is Securitron Squadron?

Securitron Squadron is an Artifact Creature — Robot. Its oracle text reads: "Squad {3} (As an additional cost to cast this spell, you may pay {3} any number of times. When this creature enters, create that many tokens that are copies of it.) Vigilance Whenever a creature token you control enters, put a +1/+1 counter on it."

Securitron Squadron

Artifact Creature — Robot

Squad (As an additional cost to cast this spell, you may pay any number of times. When this creature enters, create that many tokens that are copies of it.)