Before the Bracket System, Jason Alt created the 75% rule, which was a way to build decks around fun and power

Aatchik, Emerald Radian Abomination of Llanowar Agent Frank Horrigan Akawalli, the Seething Tower Amzu, Swarm's Hunger Atlas, Sizable Stooge Baba Lysaga, Night Witch Bebop & Rocksteady Belbe, Corrupted Observer Beledros Witherbloom Blech, Loafing Pest Bortuk Bonerattle Brako, Heartless Hunter Camellia, the Seedmiser Carth the Lion Chevill, Bane of Monsters Cleopatra, Exiled Pharaoh Cloud of Darkness Dina, Essence Brewer Dina, Soul Steeper Exdeath, Void Warlock Glissa Sunslayer Glissa, Herald of Predation Glissa, the Traitor Gorma, the Gullet Grakmaw, Skyclave Ravager Greta, Sweettooth Scourge Grismold, the Dreadsower Gyome, Master Chef Hapatra, Vizier of Poisons Harald, King of Skemfar Hazel of the Rootbloom High Perfect Morcant Hogaak, Arisen Necropolis Honest Rutstein Ikra Shidiqi, the Usurper Iname as One Izoni, Center of the Web Izoni, Thousand-Eyed Jarad, Golgari Lich Lord Jenova, Ancient Calamity Kagha, Shadow Archdruid Killmonger, Scourge of Wakanda Kraven the Hunter Lathril, Blade of the Elves Lluwen, Exchange Student Lluwen, Imperfect Naturalist Long Feng, Grand Secretariat Mazirek, Kraul Death Priest Meren of Clan Nel Toth Michonne, Ruthless Survivor Nath of the Gilt-Leaf Nemata, Primeval Warden Neo Exdeath, Dimension's End Old Man Willow Old Rutstein Old Stickfingers Pharika, God of Affliction Pippin, Warden of Isengard Pizza Face, Gastromancer Polukranos, Unchained Ragnarok, Divine Deliverance Rendmaw, Creaking Nest Reyhan, Last of the Abzan Sapling of Colfenor Sarulf, Realm Eater Savra, Queen of the Golgari Shelob, Child of Ungoliant Shessra, Death's Whisper Sisters of Stone Death Skullbriar, the Walking Grave Slimefoot, the Stowaway

This pairs very well with Soul Sisters which are unlikely to attack anyway
Ursaring can be obtained from Pulsing Aura pack in the Pulsing Aura set
In a modern context, it's just too weak to matter
You'll drop her and then 0 for a lost life and a card which is very good