Is The First Tyrannic War legal in Standard, Modern, and Commander?

The First Tyrannic War is legal in: Legacy, Vintage, Commander.

The First Tyrannic War

Q: What type of card is The First Tyrannic War?

The First Tyrannic War is an Enchantment — Saga. Its oracle text reads: "(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — You may put a creature card from your hand onto the battlefield. If its mana cost contains {X}, it enters with a number of +1/+1 counters on it equal to the number of lands you control. II, III — Double the number of each kind of counter on target creature you control."

Enchantment — Saga

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I — You may put a creature card from your hand onto the battlefield. If its mana cost contains , it enters with a number of +1/+1 counters on it equal to the number of lands you control.