Both featuring card art by Mark Poole, the effect of Martyrdom allows you to redirect damage from one creature to the next, essentially causing the noble sacrifice of the martyr instead of a more valuable creature
If nothing else, it will be a nice excuse to dust off a Rakshasa Vizier and Rakshasa Deathdealer
The only downside is losing some life, but losing life has always been a black thing, and if you like playing black (or for the matter, Magic: The Gathering ), remember: life is also a resource
Colorless Options If you are looking for more options, especially in blue, black or red, there are a lot of colorless artifacts that can assist
Red XIII, Proud Warrior - Gives your shielded creatures trample and vigilance
The hobby was developing, but on a smaller scale in a dedicated pack-opening and competitive community