Earth Ultima or Collision is the second most powerful earth spell at RuneScape (first being Earth Ultima II). It needs 13 Air runes, 17 Earth Runes, 1 Blood rune and 2 Death runes to cast and Alphans' Quest to be finished. You also need to buy Supreme Magic Potion, which aids you to get 115 Magic (which the potion boosts by 21-20 points), beware, you will get 500 damage when drunk, and adds 200 more damage when drinking the second dose, 250 at the third, and 350 at the last dose (1300 altogether). Although this spell is very expensive, this can spawn two surges of earth then followed by Entangle. Its maximum damage is 1104.