That means to optimize value, you want three creatures entering on average every turn
In either case, the key is to look for a moment when your opponent has multiple monsters on-field, then activate your card, Tributing Ame no Murakumo no Mitsurugi
It could even be triggered by casting a spell - the spell would say "When you cast this spell, Discover X"
Aeve, Progenitor Ooze | Commander | Stephen Johnson Commander (1) 1 Aeve, Progenitor Ooze Creatures (28) 1 Acidic Slime 1 Ancient Ooze 1 Beast Whisperer 1 Bioplasm 1 Biowaste Blob 1 Caustic Caterpillar 1 Corrosive Ooze 1 Eternal Witness 1 Experiment One 1 Fyndhorn Elves 1 Gluttonous Slime 1 Gobbling Ooze 1 Green Slime 1 Inexorable Blob 1 Karametra's Acolyte 1 Manaplasm 1 Mwonvuli Ooze 1 Nyxbloom Ancient 1 Oashra Cultivator 1 Ochre Jelly 1 Predator Ooze 1 Sakura-Tribe Elder 1 Slurrk, All-Ingesting 1 Solemn Simulacrum 1 Splitting Slime 1 Spore Frog 1 Temur Sabertooth 1 Wood Elves Instants (7) 1 Beast Within 1 Early Harvest 1 Heroic Intervention 1 Inspiring Call 1 Momentous Fall 1 Reclaim 1 Return to Nature Sorceries (14) 1 Broken Bond 1 Cultivate 1 Full Flowering 1 Gelatinous Genesis 1 Kodama's Reach 1 Miming Slime 1 Overwhelming Encounter 1 Overwhelming Stampede 1 Rampant Growth 1 Revive 1 Shamanic Revelation 1 Slime Molding 1 Three Visits 1 Triumph of the Hordes Enchantments (9) 1 Bear Umbra 1 Eladamri's Vineyard 1 Food Chain 1 Greater Good 1 Guardian Project 1 Gutter Grime 1 Ooze Flux 1 Sight of the Scalelords 1 Unnatural Growth Artifacts (6) 1 Arcane Signet 1 Liquimetal Torque 1 Mind Stone 1 Rhonas's Monument 1 Sol Ring 1 Thought Vessel To push this list up in power level, you'd definitely want to load up on mana-positive rocks, lower mana creatures that are much less oozy, and more card draw
Mana sinks are cards that, while not necessarily expensive in themselves, can make use of your extra mana in late-game scenarios
