Gix, Yawgmoth Praetor Gix, Yawgmoth Praetor is very good in black disruptive/discard decks filled with cards like tokens, Deep-Cavern Bat, or Preacher of the Schism
Then theres Fractured Sanity, a three-mana Blue sorcery that has each opponent mill 14 cards (discarding from their deck to their graveyard), but can also be cycled to draw a card and make opponents mill four cards instead
If youre tapped out, Sauron, the Dark can theoretically draw you four cards a turn
Unless youre an investor who got in on the ground floor, you may struggle to pick up a box now
Vaultborn Tyrant Many modern Magic cards eschew downsides, including cards like Six that are self-fueling engines