Guild Wars 2

These stacks wouldn’t add extra DoT like bleed does, they would be like the sigils that you collect stacks for and at 25 or 26 have some sort of effect and reset once you reach those stacks. My Ideas for burn and poison would be:

~At 15 stacks of poison, your target gets Plagued (Condition). Plauge slows movement and attack speed by 33% for 3 seconds. Considered Crowd control so Champions with stacks of defiance can ignore.

~At 15 stacks of burn, the target is scourched (Condition), leaving them with reduced healing effects for 4 seconds. Healing is 25% less effective for 4 seconds.

The stack numbers could be lower since reaching this many stacks is difficult but it would have to be a high number so places like PvP and WvW don’t see this as an reocurring issue.