Lv 1
Effects last longer: burns, flowers, fireflies, thorns and storms. Not freezes or roots.
Duration +10%
Lv 2
They last longer again.
Duration +20%
Lv 3
Longer still.
Duration +30%
Lv 4
Fires smoulder longer yet.
Duration +40%
Lv 5
The slowest burn in the meadow.
Duration +50%
Pairs with Thorn Mortar
Patience is a virtue. So is setting things on fire for longer.
Emberloop is a free bullet heaven game for your browser, on a phone or a computer.