However, it may be possible to use it depending on the situation, regardless of whether it is a monster Spell Trap or not
Whether Treefolk Token should see play would depend on the specific strategy and synergy of the deck it's included in

Anathemancer Archfiend of Sorrows Artificer's Dragon Ashnod's Harvester Brackwater Elemental Canoptek Tomb Sentinel Chronomancer Cityscape Leveler Combat Courier Corpse Connoisseur Dregscape Sliver Dregscape Zombie Etherium Abomination Extractor Demon Fatestitcher Fire-Field Ogre First-Sphere Gargantua Ghost Ark Grixis Grixis Slavedriver Heavyweight Demolisher Hell's Thunder Hellspark Elemental Hexmark Destroyer Kathari Bomber Kathari Screecher Kederekt Leviathan Lokhust Heavy Destroyer Mask of the Jadecrafter Meticulous Excavation Mishra's Juggernaut Mishra's Research Desk Mishra, Tamer of Mak Fawa Molten Gatekeeper Perennial Behemoth Phyrexian Dragon Engine Platoon Dispenser Priest of Fell Rites Reconstructed Thopter Rotting Rats Royal Warden Salvation Colossus Scourge Devil Scrapwork Cohort Scrapwork Mutt Scrapwork Rager Sedraxis Specter Sedris, the Traitor King Shambling Remains Simian Simulacrum Skorpekh Lord Solemn Doomguide Terisian Mindbreaker Terror Ballista Tocasia's Onulet Tomb Blade Tri-Sentinel, Act of Vengeance Triarch Praetorian Undead Leotau Viscera Dragger Vithian Stinger Yotian Frontliner

That way, it will have the same weight and feel as an actual card
Defending to the death isnt always enough
White is slimmer on premium cards than green, though, as its other two removal spells (Eriette's Lullaby and Steer Clear) are less impressive