Interaction needs to be leaner, or at least do more at that cost
Underground Sea Rob Alexander Underground Sea is another card with artwork from Rob Alexander that depicts a mind-boggling design of a sea beneath the ocean
Sisay, Weatherlight Captain is a popular Commander for both archetypes, and other Legend-loving cards like Reki the History of Kamigawa, Urza's Ruinous Blast, Jhoira Weatherlight Captain, Kamahl's Druidice Vow, and Primevals' Glorious Rebirth are shared across both decks
Those decks are usually called Death and Taxes because your white disruptive creatures tax your opponents mana
There just arent enough total oozes in the game (without including shapeshifters) to give you much choice when you slot them in
FromTheShire: Not a bad source of recursive card draw if you have a sacrifice engine set up