Blood Daemons are no mere astral beast to trifle with, of the variety that exist within the black magic caste. Blood for blood, as they say, for they accept no other payment or call for their services. And so long as they are fueled, they will remain in the same dimension as their mage summoner. However, the powerful of the blood daemons do not so easily follow or bend to the whims of a summoner. Zeran and Reiva are two such cases, known among their brethren for being not only exclusive, but exceedingly loyal. Should a mage pique their interest or prove themselves, and draw blood a certain fashion, only then with the Clawed Scythe and Death Drinker come forth. Such sacrifices, however, put the summoner in harm's way...
A worthwhile risk, no?