Malagil's Compendium Volume I

Summon Heartstone:
Summon Element Scroll
Words of the Element
Bloodstone

Minor Summoning Earth:
Elemental: Earth
Words of Tyranny
Block of Ore

Minor Summoning Water:
Elemental: Water
Words of Tyranny
Shark Skin

Minor Summoning Flame:
Elemental: Fire
Words of Tyranny
Halas Heater

Minor Summoning Mist:
Elemental: Air
Words of Tyranny
Aviak Feathers


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Source: Ingame book