Isareth the Awakener

In Commander, Isareth the Awakener is a niche but functional value engine in mono-black or black-heavy decks that want repeatable recursion without dedicating spell slots to it — she does real work in aristocrats shells where the corpse-counter exile clause matters less than the ETB triggers you're harvesting. In Legacy and Vintage, she's too slow and fragile for those formats' threat density; a 3/3 for three with a conditional upside doesn't compete with what those formats are doing on turns one and two. Modern and Pioneer offer slightly more hospitable midrange environments, but she still competes against more efficient recursive threats and sees essentially zero competitive play in either. Oathbreaker is her friendliest non-Commander home, where a black-aligned signature spell and lower life totals let her attack trigger fire more reliably.