A crown of thorns that stays until your next loop closes. Its kills are loop kills.
Recipe
Snare Ring at its highest level + Tinder, then open a chest
Damage 77 · Duration 10 s · Hits every 0.33 s
Loop kills
A loop kill is a bug killed by a flare, by a loop-only weapon, by a flare charm or union just after a flare that catches a bug, or by anything within a few seconds of a flare catching it. Loop kills give far more XP and score than weapon kills, and bigger loops pay more.
Emberloop is a free bullet heaven game for your browser, on a phone or a computer.
FAQ
How do you get Bramble Crown in Emberloop?
Take Snare Ring to its highest level and own Tinder, then open a chest: it evolves into Bramble Crown.