Is Simic Basilisk legal in Standard, Modern, and Commander?

Simic Basilisk is legal in: Modern, Legacy, Vintage, Commander.

Simic Basilisk

Q: What type of card is Simic Basilisk?

Simic Basilisk is a Creature — Basilisk 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}{G}: Until end of turn, target creature with a +1/+1 counter on it gains "Whenever this creature deals combat damage to a creature, destroy that creature at end of combat.""

Creature — Basilisk 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.)

: Until end of turn, target creature with a +1/+1 counter on it gains "Whenever this creature deals combat damage to a creature, destroy that creature at end of combat."