This is where the likes of Charizard in Relentless Flame, Groudon in Towering Heights or Rillaboom in, well, Rillaboom, rule supreme
When you do, target creature gets -1/-1 until end of turn
A noteworthy example is Bulbasaur compared to Charmander and Squirtle
No matter what, the addition of a sixth color would be a huge shift in the multiverse of Magic, and would need some sort of wibbly-wobbly, timey-wimey explanation to explain where it came from
This deck focuses on the Cursed and Wicked Roles, using any lost life or sacrifices to make a stronger and cheaper board
The most popular archetype in Pioneer, Rakdos Midrange, often runs a couple, where they have potential to combo nicely with Unstoppable Slasher, Reflection of Kikki-Jikki, or the deck's giant demon tokens