What does mantle of Flames do in chthonic fissure tree?

Hey im unsure of what the difference is between ignite chance and ignite chance per second is?

Say you have 100% chance to Ignite on hit for spells from all of your sources combined. If you put one point into Mantle of Flames, you will have the following stats from that node:

  • (from the first part of mantle) your 100% chance to ignite on hit for spells is applied as 100% chance to ignite per second

  • (from the second part of mantle) you get an additional 50% chance to ignite per second

  • this adds up to 150% chance to ignite per second (ailments can apply more than one stack at a time, so you’re guaranteed to apply one stack per second, with a 50% chance to apply a second stack).

If you take a second point in mantle, your 100% chance to ignite on hit is converted to 200% chance per second, and you get an additional 100% from the second part of the node, adding up to 300% chance per second, guaranteed 3 stacks per second.