Flying, trample Whenever this creature mutates, exile cards from the top of your library until you exile a nonland permanent card
$0.69 Demolisher Spawn Duskmourn: House of Horror Commander Decks $0.49 Mazirek, Kraul Death Priest Edge of Eternities Commander Decks $0.49 Gluttonous Hellkite Modern Horizons 3 Commander Decks $1.29 Nogi, Draco-Zealot Tarkir: Dragonstorm Commander Decks $2.79 Daemogoth Titan Strixhaven: School of Mages $0.99 Kresh the Bloodbraided Streets of New Capenna Commander Decks $0.35 Twisted Landscape Modern Horizons 3 $0.99 Ziatora, the Incinerator Modern Horizons 3 Commander Decks $0.99 Szarel, Genesis Shepherd (0004 - Borderless) Edge of Eternities Commander Decks Variants $0.99 Arcane Signet Secrets of Strixhaven Commander Decks $1.49 Riveteers Ascendancy Streets of New Capenna $1.49 Vaevictis Asmadi, the Dire Core Set 2019 0 results found
: This enchantment becomes a 7/7 Beast creature in addition to its other types
Then in your combat you can flip her into an Anthem to double pump your legendary team, but only if you control two more
1 Chromatic Lantern
In fact, Hullbreaker Horror's best use in the deck is a part of an infinite combo that lets you cast an infinite amount of noncreature spells