Originally Posted by
Lord C
If we combine with what we know of the Apo Sub HGWs by material, this one shouldn't even exist. They had like 5 at most, though apparently exceptions out of hundreds that the grail could actually do something. So either this one is this exceptional exception even by Apo standards, or they are jury rigging this thing.
Even if Remina was a high class mage she shouldn't be able to sustain 2 servants. Meaning either they are nerfed or there is something else sustaining them. I'd hazard a guess that they are actually using multiple minor grails since they made a big deal of the setting, Scandinavia sounds like a place with good magic foundation like when Skadi manipulated the leylines. So this way they circumvent part of the issues, get more servants, since every time a servant is summoned there is an ''uptick'' of mana to power up the grail even if they come nerfed it's a positive, the pairs die out and with multiple minor grails they won't overload and blow up like in the flashback of that one manga Apo master.