PREP FOR THE BATTLE

3 Blazing Hellhound Blood Cultist Bloodhall Priest Bloodtithe Harvester Body Dropper Boggart Cursecrafter Boltwing Marauder Brawl-Bash Ogre Bullseye, Death Dealer Carnage Gladiator Carnage, Crimson Chaos Carnival Hellsteed Chainer, Nightmare Adept Chaos Spewer Chaos, the Endless Charforger Cindering Cutthroat Coalstoke Gearhulk Crash, Reckless Endrider Cruel Administrator Cryptborn Horror Cult Guildmage Cultbrand Cinder Deathbringer Thoctar Deepfire Elemental Defiler of Souls Demigod of Revenge Desecrex, Gift of Servitude Dire Fleet Captain Dire Fleet Neckbreaker Dire Fleet Warmonger Dragonlord Kolaghan Dread Slag Dreadhorde Butcher Dust Stalker Eclipsed Boggart Elite Headhunter Emberstrike Duo Exava, Rakdos Blood Witch Falkenrath Aristocrat Far Fortune, End Boss Fireblade Artist Fireglass Mentor Flayer Drone Florian, Voldaren Scion Footlight Fiend Forerunner of Slaughter Forge Boss Fulminator Mage Garland, Knight of Cornelia Garna, Bloodfist of Keld Garna, the Bloodflame Gastal Thrillseeker Gev, Scaled Scorch Ghostflame Sliver Glistening Goremonger Gobhobbler Rats Goblin Deathraiders Goblin Outlander

Thus, Reanimator decks generally try to have a "toolbox" of different creatures to deal with different opponents
All of that from a one-mana creature with dash as a backup mode
Given Krrik is popular on its own, Defiler of Flesh will at the very least find a home in Krrik decks
As long as a creature has a menace counter on it, it has menace