This is where Braid of Fire comes in, as it's Cumulative Upkeep cost is to
Narset, Enlightened Master A weakness of Voltron strategies is that since they rely on one creature removal can be backbreaking
Gives you a mix of high end packs and regular ones
Mardu is great at pitching cards into the graveyard with various Entomb and Faithless Looting effects, so getting a strong creature into the yard and reanimating it should be no problem
Sauron, the Dark Lord boasts remarkable abilities, sure to draw the ire of the table - but with built-in protection to stave off their advances
Like we saw with Mizzix, this is hard to answer since if you kill her, you can recast her, and she is in Cabal Coffers and Rampant Growth colors so you have the mana