Is The Crowd Goes Wild legal in Standard, Modern, and Commander?

The Crowd Goes Wild is legal in: Legacy, Vintage, Commander.

The Crowd Goes Wild

Q: What type of card is The Crowd Goes Wild?

The Crowd Goes Wild is a Sorcery. Its oracle text reads: "Assist (Another player can pay up to {X} of this spell's cost. You choose the value of X.) Support X. (Put a +1/+1 counter on each of up to X target creatures.) Each creature with a +1/+1 counter on it gains trample until end of turn."