The Lake Quest (Part 4) Finale

The Undead Paladin Knight then took the spatial bag as it swam into the river. Seth ordered it to take orders from Red after that so they could continue with the mission as they were tested by Seth.

(Master Seth, With the Subordinate's Blessing alone, The Undead Paladin Knight could easily resist the Dark Crystal Ore's Effects.)

(He probably would've still been safe even if that was not in effect, right?)

(Yes, that would still be the case.) Uriel knew that but by having the Subordinate's blessing in effect, it can help cancel/prevent greater harm from stuff that they might not be aware of.)

The Undead Paladin Knight swam and looked for the Dark Crystal Ore. As he got closer to the bottom, it wasn't just one that he found but a cluster of them, as if having a thriving ecosystem.