#please don't feel like i'm saying the way your summoning spells work is wrong btw

[sewi-li-suwi]

Fact: The Earth rotates very quickly. As a result, different parts of the Earth move at different speeds - the equator at about 1670km/h, and the poles at none.

Fact: Summon Object can be used to move an object from any location to a space near you.

Thought: By summoning an object from the equator, it will be moving West at a significant speed. Likewise, by summoning an object from a pole it will be moving East at a significant speed.

Fact: I live in England.

Fact: England has a longitude of roughly 54⁰. The radius of the Earth is roughly 6321km.

Thought: If my maths is right, England moves at roughly 1324km/h.

Fact: 1324km/h is a reasonable speed for a bullet.

Fact: 1324km/h is Faster than the speed of sound.

Conclusion: By casting Summon Object on rocks in The North Pole, you can create bullets from thin air.