Obsidian Striker

Obsidian Strikers are craftable, consumable throwing weapons that are heavily affected by gravity, rolling along the ground and piercing up to nine enemies. The tenth and final enemy hit will be a "strike" that deals extra damage and releases some harmless confetti, and the striker will always become retrievable afterwards. However, it will break if it runs into an insurmountable tile before this, and can never be retrieved this way.