pallen said:This is incorrect. A level 9 solo monster is worth 2000 XP, which is equivalent to a level 18 standard monster. That should be a challenging fight for a level 15 character.
Of course, I want to know how a PC gets that close to a solo dragon before the encounter starts. This combo only works if you're within walking range when the encounter starts. Any further than that and the dragon just hovers and uses its dragon breath, safe from any melee attacks.
No, you're incorrect. Appropriate XP=challenge breaks down outside of 3 or so levels. That's why we use minions instead of just level-10 monsters. Page 56 of the DMG points this out in the sidebar. *Easy* encounters could go as low as 4 levels lower than the party for individual enemy levels. You've presented a level-6 situation, which, given that 4 is easy, easily eats up the extra xp over your level 15 person's budget.