Still, his damage negation ability could be useful in specific scenarios
You can choose to stop whenever you wish, or you can use it as something of a green boardwipe

World Shaper (Black-Red-Green) 0001_MTGEOE_CmdrFace: Hearthhull, the Worldseed 0004_MTGEOE_CmdrFace: Szarel, Genesis Shepherd Hearthhull, the Worldseed Szarel, Genesis Shepherd Eumidian Wastewaker Evendo Brushrazer Planetary Annihilation Baloth Prime Exploration Broodship Horizon Explorer Scouring Swarm Eumidian Hatchery Festering Thicket Vernal Fen Fabled Passage Braids, Arisen Nightmare God-Eternal Bontu Blasphemous Act Hammer of Purphoros Moraug, Fury of Akoum Augur of Autumn Centaur Vinecrasher Formless Genesis Loamcrafter Faun Multani, Yavimaya's Avatar Oracle of Mul Daya Pest Infestation Rampaging Baloths Splendid Reclamation Tireless Tracker Titania, Protector of Argoth World Breaker Escape to the Wilds Gaze of Granite The Gitrog Monster Korvold, Fae-Cursed King Mazirek, Kraul Death Priest Omnath, Locus of Rage Soul of Windgrace Windgrace's Judgment Worldsoul's Rage Canyon Slough Cinder Glade Karplusan Forest Llanowar Wastes Sheltered Thicket Smoldering Marsh Sulfurous Springs Twilight Mire Viridescent Bog Farseek Springbloom Druid Binding the Old Gods Arcane Signet Sol Ring Command Tower Mountain Valley Terramorphic Expanse Infernal Grasp Night's Whisper Sprouting Goblin Aftermath Analyst Beast Within Cultivate Groundskeeper Harrow Nature's Lore Roiling Regrowth Satyr Wayfinder Skyshroud Claim Tear Asunder Juri, Master of the Revue Mayhem Devil Putrefy Rakdos Charm Uurg, Spawn of Turg Bojuka Bog Cabaretti Courtyard Dakmor Salvage Escape Tunnel Evolving Wilds Maestros Theater Myriad Landscape Riveteers Overlook Rocky Tar Pit Wastes 5 Swamp [6bA8M3vfgD4iiRcINhHOVh] 3 Mountain [7bgakB5GyB2U2XUlnWu0JV] 8 Forest [21fHedXjtX2H0UirqBqqn0] Reform the lands of Sothera to carve a path to victory in this Commander deck

What's your favorite card from Secrets of Strixhaven
The Black Beast of Aaargh (Marit Large) is very hard to deal with
Sacrifice a Food: Until end of turn, target creature you control assigns combat damage equal to its toughness rather than its power