Creature types can represent species (such as Human, Zombie and Merfolk) or roles (such as Warrior, Scout and Wizard)
Let me elaborate
Universes Beyond: Doctor Who has crashed its runaway Tardis into Magic: The Gathering , bringing a phonebooth-load of Time Lords and companions along with it
The deck was able to stall out until they could play huge bodies and defeat you in one turn while maintaining card advantage

Aboleth Spawn Abomination Abomination of Gudul Abomination of Llanowar Abyssal Gatekeeper Abyssal Gorestalker Abyssal Horror Abyssal Nocturnus Advanced Stitchwing Ahriman Ancient Cellarspawn Appendage Amalgam Arcbound Fiend Armaggon, Future Shark Arvinox, the Mind Flail Atraxa, Praetors' Voice Awoken Horror Balefire Liege Bedlam Reveler Blistergrub Bloodcurdler Boneshard Slasher Brainstealer Dragon Bruna, the Fading Light Cabal Therapist Canker Abomination Captain N'ghathrod Carnival Carnivore Carrion Locust Cateran Brute Cateran Enforcer Cateran Overlord Cateran Slaver Chained Throatseeker Chasm Skulker Childhood Horror Chittering Host Chupacabra Echo Clammy Prowler Cleaver Skaab Comet Crawler Conduit of Storms Consuming Aberration Core Prowler Corrupted Harvester Cosmic Horror Crawling Chorus Creakwood Liege Creeping Inn Cruel Witness Crypt Lurker Cryptborn Horror Culvert Ambusher Cursed Monstrosity Dark Hatchling Dauthi Horror Deathbonnet Hulk Deathbringer Liege Defiler of Flesh Delraich Demolisher Spawn Despoiler of Souls Devouring Strossus Devouring Sugarmaw Dinrova Horror Docent of Perfection Doom Weaver Douser of Lights Dread Osseosaur Dread Reaper Dread Slag Dread Slaver

That's the "kindness" part: no 1-shotting some random schmuck with Tainted Strike and then continuing the game for hours, we're killing everyone all at once