Malagil's Compendium Volume I

Summon Heartstone:
Summon Element Scroll
Words of the Element

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

Source: Ingame book