If this enchantment were to be printed today, it would certainly be legal in sanctioned play, and honestly quite easy to win with, like a supercharged Helix Pinnacle for die-rolling decks
How Many Rares Are in a Collector Booster Box
This card was printed long before Modern became a format and has been banned in Legacy since Legacy became a format independent from Vintage in 2004
Plenty of cards from that set offer benefits based on the number of party members or even having a full party with one of each creature type
Today's cards focus on the iconic sky pirates and one of the series of quests unique to this game that they can embark on
Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel Rarity: Mythic Rare TYPE: Legendary Creature // Legendary Creature SUBTYPE: Human Avatar Soldier // Angel Nightmare Avatar CMC: 3 Mana cost: USD: $67.56 EUR: 51.50 TIX: 1.02 EDHREC RANK: 1373 (3/3) Whenever Sephiroth enters or attacks, you may sacrifice another creature