Is Balduvian Hydra legal in Standard, Modern, and Commander?

Balduvian Hydra is legal in: Legacy, Vintage, Commander.

Balduvian Hydra

Q: What type of card is Balduvian Hydra?

Balduvian Hydra is a Creature — Hydra. Its oracle text reads: "Balduvian Hydra enters with X +1/+0 counters on it.Remove a +1/+0 counter from Balduvian Hydra: Prevent the next 1 damage that would be dealt to Balduvian Hydra this turn.{R}{R}{R}: Put a +1/+0 counter on Balduvian Hydra. Activate only during your upkeep."

Creature — Hydra

Balduvian Hydra enters with X +1/+0 counters on it.<br>Remove a +1/+0 counter from Balduvian Hydra: Prevent the next 1 damage that would be dealt to Balduvian Hydra this turn.<br>: Put a +1/+0 counter on Balduvian Hydra. Activate only during your upkeep.

Set Ice Age

Rarity Rare

Artist Melissa A. Benson