They also include Soulcatchers' Aerie, and more
The laundry list of things that Klothys, God of Destiny does includes damaging opponents every turn, gaining life, ramping, eating graveyards, and occasionally being an indestructible 4/5
Domri can't riot something that was un-castable, like token creatures, nor can he work on multiple dorks
This naturally combos with firebending, and it can be very powerful in formats where cards like MTG 's Lightning Bolt are legal
Remember, aggro decks want to win the game as quickly as possible, so its best if your lands can be used for mana right away
Here are some incentives for it: Cards like Corrupt, Cabal Coffers, Mutilate, and Defile want you to play as many swamps as possible, so their efficiency is maximized in mono-black decks