Originally Posted by
Deusteele
As someone that mains a Blood Death Knight in WoW, which is a perfect example of what's the OP is asking for.
It's just a mitigation tank that absorbs a flat amount of damage.
-Death Knights work via an ability called Death Strike. When this ability is used, and can be used twice in a 10s window depending, the Death Knight is healed on damage done and receive a bubble based on amount healed.
While it does work at all levels of play decently, it's not really anything special. It took Blizzard the better part of two years to figure out balance on the design and it still starts weak at the beginning of an expansion and ends with being horrendously overpowered. It has the simplest form of Active Mitigation, and requires extensive personal and external cooldown usage.
The OP is really just wanting a different tank for "reasons". No real need for one and on the development side might require more effort to make work within this games structure.