Changes to make the hero do not learn free spells and all sprite spells are displayed correctly in the Mage Guild.

SorrowEn.MX2.lua

Trigger(MAP_START, "", "give_spells");
Trigger(TOWN_LOADED, "Sorrow's End", "check_library");

startMap = 0;

mapVariables = {"startMap"};

function give_spells()
	if startMap == 0 then
		startMap = 1;
		p = GetPlayer(0);
		h = GetHero(p, 0);
		GrantSpell(h, SPELL_METEOR_SHOWER);
		SetPrimarySkill(h, PRIMARY_SKILL_KNOWLEDGE, 10);
		SetSpellpoints(h, 100);
		SetSecondarySkill(h, SECONDARY_SKILL_LEADERSHIP, 1);
		SetSecondarySkill(h, SECONDARY_SKILL_WISDOM, 3);

		p2 = GetPlayer(1);
		h2 = GetHero(p2, 0);
		GrantArmy(h2, CREATURE_BONE_DRAGON, 10);
	end
end;

function check_library()
	t = GetCurrentTown();
	if HasVisitingHero(t) then
		h = GetVisitingHero(t);
		if HasArtifact(h, ARTIFACT_MAGES_RING_OF_POWER) then
			TakeArtifact(h, ARTIFACT_MAGES_RING_OF_POWER);
			MessageBox("The Mage's Ring fits easily in the keyhole of the sealed library door. Inside lie shelves packed with tomes.");
			SetGuildSpell(t, 4, 0, SPELL_DIMENSION_DOOR);
			SetGuildSpell(t, 4, 1, SPELL_SUMMON_WATER_ELEMENTAL);
			SetGuildSpell(t, 4, 2, SPELL_SUMMON_EARTH_ELEMENTAL);
			SetGuildSpell(t, 4, 3, SPELL_RESURRECT_TRUE);
			BuildInCurrentTown(BUILDING_MAGE_GUILD);
			BuildInCurrentTown(BUILDING_MAGE_GUILD);
			BuildInCurrentTown(BUILDING_MAGE_GUILD);
			BuildInCurrentTown(BUILDING_MAGE_GUILD);
			BuildInCurrentTown(BUILDING_MAGE_GUILD);
			SetNumGuildSpells(t, 0, 4);
			SetNumGuildSpells(t, 1, 4);
			SetNumGuildSpells(t, 2, 4);
			SetNumGuildSpells(t, 3, 4);
			SetNumGuildSpells(t, 4, 4);
		end;
	end;
end;