Rares and Mythic Rares that can anchor your Limited or Constructed decks
With the wide variety of Demons in those colors, this wont be a problem
Acid Web Spider Ademi of the Silkchutes Alenni, Brood Recruiter Alessos and Pras, Acrobats Amazing Spider-Girl Amazing Spider-Man Ancient Spider Aquastrand Spider Arachne, Psionic Weaver Arachnoid Arachnus Spinner Arasta of the Endless Web Arasta of the Endless Web Araa, Heart of the Spider Archweaver Argyr, Tidal Spinner Astonishing Spider-Man Blightwidow Borys, the Spider Rider Brood Weaver Broodspinner Cactarantula Canoptek Spyder Canopy Spider Canyon Crawler Chainweb Aracnir Chizak, Apex Arachnosaur Cirina Bargainspinner Copper Longlegs Cosmic Spider-Man Cren of the Spider Brood Darval, Whose Web Protects Deadly Recluse Diligent Webkeepers Doom Weaver Dragonlair Spider Drider Egrix the Bile Bulwark Ember Weaver Ettercap Ezekiel Sims, Spider-Totem Fateweaver Fizik, Etherium Mechanic Frostweb Spider Funnel-Web Recluse Ghost-Spider Ghost-Spider, Gwen Stacy Giant Spider Giant Trap Door Spider Glint Weaver Gloomwidow Gloria, the Great Armorer Glowstone Recluse Gnottvold Recluse Goliath Spider Grappler Spider Graverobber Spider Gwenom, Remorseless Hatchery Spider Hitchclaw Recluse Hoarding Recluse Iron Spider, Stark Upgrade Ishkanah, Grafwidow Janai and Hoppy, Roofskippers Jungle Weaver Juvenile Gloomwidow Kavaero, Mind-Bitten Kessig Recluse Kivni, Orb Weaver Kraza, the Swarm as One Kroble, Envoy of the Bog Kumonosu, the Watchful
Your reanimation spells will typically cost much less than your opponents will spend on their biggest creatures, so you will spend far fewer resources while exerting similar, if not stronger, pressure on the table
I do worry that there might be a bit too much tracking for a new player here, with multiple cards having multiple different types of counters, and a lot of moving counters back and forth between permanents
