In order to increase your mana production (or permanent production, for sacrifice decks) and pay for more spells, you must also pay to draw more cards that have those effects
The big problem isn't IP crossovers and Fortnite Secret Lair drops
Ive never built a group hug deck, but this might have to be a deck I pick up and add to the collection
Its not difficult to make it feel like a one-sided wrath, since you can use energy to make your creatures indestructible, so they dont have to worry about getting destroyed

Advanced Search Sets Random Syntax Akawalli, the Seething Tower Blightreaper Thallid Blightsower Thallid Boneyard Mycodrax Brackish Trudge Broodrage Mycoid Cankerbloom Corpsejack Menace Corpsejack Menace Deathbloom Thallid Deathbonnet Hulk Deathbonnet Sprout Deathcap Marionette Deathspore Thallid Feral Thallid Fungal Behemoth Fungal Colossus Fungal Shambler Fungus Elemental Fungus Sliver Fungusaur Ghave, Guru of Spores Insidious Fungus Lichenthrope Mindbender Spores Mold Adder Mold Demon Mold Folk Mold Shambler Molderhulk Moldgraf Scavenger Mycoid Shepherd Mycoloth Myconid Spore Tender Pallid Mycoderm Placid Rottentail Psychotrope Thallid Rhizome Lurcher Rot Shambler Saurian Symbiote Savage Thallid Skullcap Snail Slimefoot and Squee Slimefoot, the Stowaway Slimy Piper Sowing Mycospawn Spore Crawler Spore Flower Sporecrown Thallid Sporemound Sporesower Thallid Sporoloth Ancient Sproutback Trudge Swarm Shambler Synapse Necromage Tendril of the Mycotyrant Thallid Thallid Devourer Thallid Germinator Thallid Omnivore Thallid Shell-Dweller Thallid Soothsayer The Mycotyrant Thorn Thallid Tukatongue Thallid Undercellar Myconid Undergrowth Scavenger Utopia Mycon Vitaspore Thallid Xavier Sal, Infested Captain Yavimaya Sapherd

This helps to improve the mana generation of Vivi and turns the rest of your creatures into better attackers