If the target creature is an illegal target as Sin's last ability tries to resolve, it won't resolve and none of its effects will happen
This card has been on the decline, though, ever since Wizards of the Coast made it clear that a Vivi ban in Standard was inevitable
Before you ask, yes, this version is shiny
The cards most exposed are the competitive only staples from those four sets, the ones whose price leaned on Standard demand rather than collector appeal
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: $31.62 EUR: 25.69 TIX: 1.02 EDHREC RANK: 1373 (3/3) Whenever Sephiroth enters or attacks, you may sacrifice another creature
Legal in Legacy, Vintage, Commander, and other Eternal formats, these cards are an exciting way to celebrate the epic stories of Middle-earth