Joshua Randall
Legend
The Knowledge skill rules also state that with a DC 10 check, you know "common knowledge" about a topic. In this case, white dragons. So the wizard encountering the white great wyrm would certainly not say, "What IS that thing?" But, as others pointed out, he might not know how fast it can fly or how many spells it can cast.Staffan said:The actual HD-based knowledge rule has some weird side effects.
15th level wizard (Knowledge (arcana) +25) encountering a wyrmling white dragon (3 HD, DC 13): "Guys, it's immune to cold, breathes cold, can climb those ice walls like nobody's business, and is immune to paralysis and stuff."
The same wizard encountering a white great wyrm (36 HD, DC 46): "What IS that thing?"