Restore Balance is strong but comes with a high deck-building cost to break the symmetry and make sure it's hurting your opponent more than it's hurting you
Glory would be playable if it gave only a single creature protection until end of turn
In this guide, I'll show you an example deck I built for inspiration, then talk through the key staples of a Squirrel Girl deck you need to include, even if you want to change some of the other cards around it

Decklist: Strefan, Maurer Progenitor in Commander Strefan, Maurer Progenitor | Illustration by Chris Rallis Commander (1) Creature (35) Anje, Maid of Dishonor Anowon, the Ruin Sage Blood Artist Bloodline Necromancer Bloodlord of Vaasgoth Bloodsworn Steward Bloodtithe Harvester Bloodtracker Butcher of Malakir Champion of Dusk Cordial Vampire Crossway Troublemakers Exsanguinator Cavalry Falkenrath Forebear Falkenrath Gorger Falkenrath Noble Florian, Voldaren Scion Indulgent Aristocrat Ivora, Insatiable Heir Kamber, the Plunderer Malakir Bloodwitch Markov Enforcer Midnight Arsonist Necropolis Regent Nirkana Revenant Olivia's Attendants Olivia, Crimson Bride Patron of the Vein Sanctum Seeker Scion of Opulence Stromkirk Captain Timothar, Baron of Bats Vampire Socialite Voldaren Bloodcaster Voldaren Epicure Instant (5) Blood for the Blood God
Multani, Yavimayas Avatar and Bone Dragon offer large late-game threats that you can have access to without Atzal, Cave of Eternity
You can cast it at nearly any point as it only costs one mana