A First Look at Booster Fun The One Ring and Rings of Power aren't the only ways we're sharing more beautiful artwork and storytelling for The Lord of the Rings: Tales of Middle-earth
you can sacrifice Gaea Incarnate in response to an exile effect to mill yourself for lands early in the game, and sacrificing Gaea Incarnate to Altar of Dementia late could end up milling an opponent to death
Finally, we get to the somewhat more niche and narrow approaches, much like what Stone of Erech is trying to do here by hating creature sacrificing

Abbot of Keral Keep Act on Impulse Alania's Pathmaker Anep, Vizier of Hazoret Archaic's Agony Ardent Dustspeaker Asgardian Inspiration Atsushi, the Blazing Sky Blazing Crescendo Bonehoard Dracosaur Brazen Cannonade Breeches, Eager Pillager Breya's Apprentice Burning Curiosity Cait Sith, Fortune Teller Capricious Sliver Case of the Burning Masks Caves of Chaos Adventurer Chandra, Fire Artisan Chandra, Flameshaper Chandra, Heart of Fire Chandra, Legacy of Fire Chandra, Pyromaster Chaos Channeler Charred Foyer // Warped Space Chase Stein, Runaway Cleon, Merry Champion Clockwork Percussionist Commune with Lava Count on Luck Crimson Caravaneer Crimson Operative Crossover Collaboration Daredevil, Fearless Fighter Dark-Dweller Oracle Diversion Specialist Duchess, Wayward Tavernkeep Ecstatic Beauty Electrostatic Blast Emberheart Challenger Embodiment of Flame Embrace the Unknown End-Blaze Epiphany Endrider Spikespitter Equilibrium Adept Evendo Brushrazer Experimental Synthesizer Fateful Tempest Feldon, Ronom Excavator Fire Giant's Fury Fire-Brained Scheme Fires of Mount Doom Flameskull Galvanic Relay Geistflame Reservoir Gila Courser Glimpse the Impossible Goblin Researcher Grotag Night-Runner Harnesser of Storms Harnfel, Horn of Bounty Haste Magic Headliner Scarlett Hedron Detonator Heroes for Hire Heroes' Hangout Ignite the Future Impossible Inferno Inspired Tinkering Inti, Seneschal of the Sun Irascible Wolverine

There're a lot of different things that you can do in Magic
The sooner you get her in, the sooner you can start gaining lore thanks to her ability, Do You Know Who You Are