Is Berserk legal in Standard, Modern, and Commander?

Berserk is legal in: Legacy, Vintage, Commander.

Berserk

Q: What type of card is Berserk?

Berserk is an Instant. Its oracle text reads: "Cast this spell only before the combat damage step.Target creature gains trample and gets +X/+0 until end of turn, where X is its power. At the beginning of the next end step, destroy that creature if it attacked this turn."

Instant

Cast this spell only before the combat damage step.<br>Target creature gains trample and gets +X/+0 until end of turn, where X is its power. At the beginning of the next end step, destroy that creature if it attacked this turn.

Set Limited Edition Alpha

Rarity Uncommon

Artist Dan Frazier