Marchesa Counters Camarids

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Another Homarid Spawning Bed deck. (It's a pet card of mine.)
• Blue creatures with +1/+1 counters (these recur with Marchesa out when sacrificed to the bed)
• Other sac outlets
• When creature enters ... / When creature dies ... triggers
 
Mana Acceleration (15): General (1): Spells (20): Sideboard (Omitted/Cut card ideas):
1 Burnished Hart 1 Marchesa, the Black Rose 1 Altar of Dementia 1 Dark Impostor
1 Conqueror's Galleon // Conqueror's Foothold   1 Ashnod's Altar 1 Mirror March
1 Scuttlemutt Creatures (29): 1 Carnage Altar 1 Juri, Master of the Revue
1 Solemn Simulacrum 1 Clay Golem 1 Phyrexian Altar 1 Workhorse
1 Vessel of Endless Rest 1 Deathbringer Thoctar 1 Dire Undercurrents 1 Chasm Skulker
1 Black Market 1 Dimir Infiltrator 1 Attrition 1 Clinging Anemones
1 Apprentice Wizard 1 Grimgrin, Corpse-Born 1 Blight Mound 1 Jace's Projection
1 Clever Conjurer 1 Olivia Voldaren 1 Infernal Tribute 1 Littjara Kinseekers
1 Fatestitcher 1 Thraximundar 1 Shred Memory 1 Nadir Kraken
1 Kelpie Guide 1 Flesh Carver 1 Vampiric Rites 1 Oneirophage
1 Midnight Clock 1 Krav, the Unredeemed 1 Dispersing Orb 1 Simic Fluxmage
1 Tidewater Minion 1 Razaketh, the Foulblooded 1 Homarid Spawning Bed 1 Simic Manipulator
1 Urza, Lord High Artificer 1 Sidisi, Undead Vizier 1 Muddle the Mixture 1 Siren Lookout
1 Vizier of Tumbling Sands 1 Skyclave Shadowcat 1 Goblin Bombardment 1 Toothy, Imaginary Friend
1 Mana Echoes 1 Academy Elite 1 Impact Tremors  
  1 Anthroplasm 1 Shifting Shadow  
Lands (35): 1 Aven Surveyor 1 Shivan Harvest  
1 Underground Sea 1 Cytoplast Manipulator 1 Tooth and Claw  
1 Badlands 1 Floodchaser 1 Vicious Shadows  
1 Volcanic Island 1 Geralf's Mindcrusher 1 Warstorm Surge  
1 Watery Grave 1 Helium Squirter    
1 Blood Crypt 1 Messenger Jays    
1 Steam Vents 1 Novijen Sages    
1 Crumbling Necropolis 1 Relentless Skaabs    
1 Dimir Aqueduct 1 Siren of the Fanged Coast    
1 Rakdos Carnarium 1 Sphinx of Magosi    
1 Izzet Boilerworks 1 Stormbound Geist    
1 Cave of Temptation 1 Thought Sponge    
1 Command Tower 1 Umara Raptor    
1 Forge of Heroes 1 Vigean Graftmage    
1 Glasspool Mimic // Glasspool Shore 1 Flayer of the Hatebound    
1 Guildmages' Forum 1 Magmasaur    
1 High Market      
1 Miren, the Moaning Well      
1 Opal Palace      
1 Path of Ancestry      
1 Phyrexian Tower      
1 Tyrite Sanctum      
1 Westvale Abbey // Ormendahl, Profane Prince      
3 Swamp      
6 Island      
3 Mountain      
1 Sol Ring