Is Helium Squirter legal in Standard, Modern, and Commander?

Helium Squirter is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Helium Squirter

Q: What type of card is Helium Squirter?

Helium Squirter is a Creature — Beast Mutant. Its oracle text reads: "Graft 3 (This creature enters with three +1/+1 counters on it. Whenever another creature enters, you may move a +1/+1 counter from this creature onto it.) {1}: Target creature with a +1/+1 counter on it gains flying until end of turn."

Creature — Beast Mutant

Graft 3 (This creature enters with three +1/+1 counters on it. Whenever another creature enters, you may move a +1/+1 counter from this creature onto it.)

: Target creature with a +1/+1 counter on it gains flying until end of turn.