Creation by an unrecognized genius.

The only real crime here is finding the two dragon lairs. Also, considering

Total lack of money, no external market.

Clavius doesn't pick up the campfire near the horse lair, nor does he pick up the pile of gold (near the red cats). Ivor turns left towards the pile of gold (which he doesn't pick up either), instead of heading towards the crypts, for example. It's not a given that Clavius wouldn't have ended up in a dead end, and the situation would have become even worse.