I miss some rules for henchmen and need advice what to.
Example:
A dragon can become a wizard (DMG p283).
A monster gain HD depending on its size, not its class.
A monster-NPC and party member gain its full share of xp (DMG p92).
So the adventurers meet this really nice silver dragon wyrmling who agrees to join the party, she also is interested in learning magic from the partys wizard.
When does the wyrmling gain her first wizard level? And how many xp does she need until she becomes a second level wizard?
Example:
A dragon can become a wizard (DMG p283).
A monster gain HD depending on its size, not its class.
A monster-NPC and party member gain its full share of xp (DMG p92).
So the adventurers meet this really nice silver dragon wyrmling who agrees to join the party, she also is interested in learning magic from the partys wizard.
When does the wyrmling gain her first wizard level? And how many xp does she need until she becomes a second level wizard?