Demonic Guardian

Rank	Effect	Flavor
1	Summon white imp, lemure, ufetubus, crimson imp, or iron imp.	A weak demonic guardian rushes to your aid.
2	Summon sun demon, sixfirhy, soul eater, ice devil, or smoke demon.	A demonic guardian rushes to your aid.
3	Summon reaper, cacodemon, executioner or balrug.	A powerful demonic guardian rushes to your aid.
Summons occur when tension is high and end when tension drops. Higher ranks require higher tension. Summons will not occur while worshiping Okawaru.
Good mutation, Demonspawn mutation

Mechanics

You will receive a demonic guardian when the following condition is met:

   (3/4)*tension > mutlevel*6 + 1d(2*mutlevel*mutlevel) - 1

Note that this check occurs every turn, until a guardian is summoned. Thus, the random factor simply makes summons take longer for 'middling' tensions.

You will only receive one guardian at a time, and after receiving a guardian you will not receive another one for another (1+mutlevel) to (20+mutlevel) turns. Guardians have a 2/3 chance of vanishing each turn if tension drops below the requisite amount required to summon them, although they are guaranteed to exist for 4-7 turns. The guardians always spawn friendly, but will be angered if you attack them. Hostile guardians will not unsummon, and must be killed.

History

In 0.14, this mutation will no longer be suppressed while worshiping Okawaru, as Okawaru will no longer mind the death of allies.