Faithless Looting is probably the best enabler for madness and discard decks, appearing across the spectrum of burn decks and Sneaky Snacker decks as a powerful advantage-generating tool
You usually only get two out of three of the possible outcomes, which isnt ideal
, : Put a storage counter on this land
Frogs and Monarchs come to mind, and with Monarchs, you can give Obelisk added protection from effects via March of the Monarchs and The Monarchs Erupt, as well as use one of your opponents monsters as tribute with The Monarchs Stormforth
Midrange decks also usually have two to three colors
Text, symbols, the borders EVERYTHING