Ultima IV: Quest of the Avatar/Side Quests

All information to get the rare items is already in the game, if the Stranger talks with every character. Although the NES remake has shorter dialogues, most information is still found in the same towns and also at the same pubs.

Nightshade fungus

 * '' See also Ultima IV: Quest of the Avatar (NES)/Side quests

Three spells only require Nightshade fungus:
 * 1) Jinx: useful against large numbers of enemies;
 * 2) View: useful, but it's more convenient to buy magic gems instead;
 * 3) Kill: not useful, ranged weapons are more reliable.

Mandrake root

 * '' See also Ultima IV: Quest of the Avatar (NES)/Side quests

As the Nightshade fungus, Mandrake root can only be found "on the darkest of nights".

Seven spells require Mandrake root:
 * 1) Jinx: useful against large numbers of enemies;
 * 2) Negate: useful against enemies that cast debuff spells (sleep) on the Companions;
 * 3) Resurrect: absolutely necessary, although hopefully used not often;
 * 4) Gate travel: use sparingly, because walking allows to fight and earn experience and gold;
 * 5) View: useful, but it's more convenient to buy magic gems instead;
 * 6) Tremor: not useful, ranged weapons are more reliable;
 * 7) Iceball: not useful, ranged weapons are more reliable.

Original spell quests
This spell requires garlic and sulphurous ash.
 * Undead

🇨🇴

Improved spell mixes
🇨🇴
 * quickness
 * sleep
 * magic missile

Master System spell quests
🇨🇴
 * quickness
 * sleep
 * iceball

NES spell quests

 * '' See also Ultima IV: Quest of the Avatar (NES)/Side quests

In the NES remake, there are more spells to be found: sleep, reflect, negate, destroy, jinx, squish, tremor and defeat.

Mondain's skull

 * '' See also Ultima IV: Quest of the Avatar (NES)/Side quests

Mystic arms

 * '' See also Ultima IV: Quest of the Avatar (NES)/Side quests