Plenty of monsters and villains occupy each color of Magic, but its the black swamps that host the most vile and decrepit
Commanders like Rowan, Scion of War can potentially reduce the cost of Touch to nothing if you lose enough life
In a multiplayer match, this means sending them into your other opponents, or into your rattlesnake creatures with deathtouch for some convoluted removal
You can spend any excess mana looting and stocking away exiled cards, which you can then, well, convert into currency (Treasure), or 2/2 Rogues if you prefer
The Mystic Remora allows you to draw a card whenever your opponent casts a non-creature spell, which I guess is the 'feeding off the scraps' here
While there needed to be something to do with your cards once they rotated out of Standard on MTG Arena , not working toward one of the already established formats was confusing