You focus on the energy of the spear you are holding, and it begins to multiply. When you cast this spell, for every 2 turns that you maintain concentration, a stellar spear appears and hovers around you. When you lose concentration or if it has been 1 minute since the casting of this spell, you throw all of the stellar spears. For every spear you have created with this spell, not including the one you are holding in your hand, choose a target within range. Each stellar spear does 10d10 force damage, vanish upon impact,  and cannot miss. If you throw the rune-etched spear any time during the casting of this spell or during your period of concentration, your concentration is broken, all stellar spears vanish, and the spell is wasted.

At higher levels. For each level you cast this spell at above 8th, each stellar spear does 2d10 more force damage.