Symbiotic Swarm Deck List Commander (1) 1 Kathril, Aspect Warper Planeswalkers (1) 1 Ajani Unyielding Creatures (34) 1 Tayam, Luminous Enigma 1 Nikara, Lair Scavenger 1 Yannik, Scavenging Sentinel 1 Avenging Huntbonder 1 Cartographers Hawk 1 Vitality Hunter 1 Daring Fiendbonder 1 Slippery Bogbonder 1 Void Beckoner 1 Titanoth Rex 1 Akroma, Angel of Wrath 1 Angel of Finality 1 Cataclysmic Gearhulk 1 Kalemnes Captain 1 Odric, Lunarch Marshal 1 Reveillark 1 Solemn Recruit 1 Sunblast Angel 1 Zetalpa, Primal Dawn 1 Cairn Wanderer 1 Soul of Innistrad 1 Soulflayer 1 Hornet Queen 1 Majestic Myriarch 1 Splinterfright 1 Archon of Valors Reach 1 Karametra, God of Harvests 1 Aerial Responder 1 Vampire Nighthawk 1 Acidic Slime 1 Sakura-Tribe Elder 1 Satyr Wayfinder 1 Skullwinder 1 Nyx Weaver Spells (13) 1 Blood Curdle 1 Unbreakable Bond 1 Obscuring Haze 1 Selective Adaptation 1 Ever After 1 Duneblast 1 Unburial Rites 1 3Deathsprout 1 Despark 1 Grisly Salvage Artifacts (7) 1 Bonders Ornament 1 Netherborn Altar 1 Mimic Vat 1 Arcane Signet 1 Commanders Sphere 1 Sol Ring 1 Swiftfoot Boots Enchantments (6) 1 Martial Impetus 1 Parasitic Impetus 1 Predatory Impetus 1 Together Forever 1 Abzan Ascendancy 1 Deadbridge Chant Lands (38) 1 Nesting Grounds 1 Canopy Vista 1 Caves of Koilos 1 Exotic Orchard 1 Gavony Township 1 Grim Backwoods 1 Sungrass Prairie 1 Blighted Woodland 1 Command Tower 1 Golgari Rot Farm 1 Krosan Verge 1 Memorial to Folly 1 Myriad Landscape 1 Orzhov Basilica 1 Sandsteppe Citadel 1 Selesnya Sanctuary 1 Blossoming Sands 1 Evolving Wilds 1 Jungle Hollow 1 Scoured Barrens 7 Plains 7 Swamp 4 Forest

Again, the mechanical conceits of discarding as a cost and of tapping numerous creatures are naturally exploitable in Zombie decks
When you do that, you'll also put at least two +1/+1 counters on another creature, which is easy to increase in Golgari +1/+1 counter decks
It's a classic high-risk, high-reward engineits great in decks that pressure opponents consistently and can afford the life loss in exchange for staying loaded on cards
It would be easy to just fill out the deck with Vampires that have madness, but I think thats the wrong approach
Command Tower All 26 cards are rares within boosters and are available in 1 in 12 Set Boosters, with 1 in every Collector Booster