Mutavault aside, Thoughtseize is the best card in Standard, and Heros Downfall in a world full of giant monsters and threatening planeswalkers is precisely where you want to be
Homicide Investigator goes in clue decks or detective decks, and in aristocrats
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
CMA Commander Anthology 14 - Rare - English EN Card Name Mana Cost Type Sorcery Rarity Rare rules Text Destroy all creatures
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