Crimson Repeater

You may spill your blood, or if you are adjacent to a creature that has taken damage in the last round, to create a repeater of red crystal in an open hand. This repeater is a ranged spell attack that you are proficient with which deals 1d10+ spell modifier piercing damage. If the target can bleed, it bleeds 1 point at the start of its next turn per spell level. The repeater has a range of 50ft.

You must spend 5 hit points during the casting of this spell, or an adjacent creature must have taken at least 10 points of damage in the last round, to cast this spell. If a creature has taken at least half of the required amount of damage, you may split the difference with half of your cost. Any round you do not deal damage with the repeater, you take 2 points of damage. If using ammunition tracking, the repeater generates ammunition on its own as long as it is fed. If you have physical ammunition to load into the repeater reduce the damage required to feed it by half rounded down.

When using a spell level of 2nd or higher, increase the damage dealt by 1d10, the damage per round by 2, and the initial HP costs by 5.