Is Plaxcaster Frogling legal in Standard, Modern, and Commander?

Plaxcaster Frogling is legal in: Modern, Legacy, Vintage, Commander.

Plaxcaster Frogling

Q: What type of card is Plaxcaster Frogling?

Plaxcaster Frogling is a Creature — Frog 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.) {2}: Target creature with a +1/+1 counter on it gains shroud until end of turn. (It can't be the target of spells or abilities.)"

Creature — Frog 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 shroud until end of turn. (It can't be the target of spells or abilities.)