The biggest thing is always community, and the company that can understand that first is going to be the most successful
They often let other merfolk be played from the library, create merfolk tokens when their allies enter the battlefield, or have ways to protect each other that quickly add up
Ghost Quarter is my pick here, as itll be able to target any land, even basics, and even your own
Legendary Creature - Horror Halfling Gorbag of Minas Morgul Whenever a Goblin or Orc you control deals combat damage to a player, you may sacrifice it
As part of the Making Magic (2003-2005) article series on the game's official site, Mark Rosewater described each color in depth (as well as multicolor cards, artifact or colorless cards, and color-hybrid cards)
I'm curious if anyone has any custom graveyard-centric cards to share