Effect Tags

You create a new Effect Tag called "Burn".

You then create 3 different kinds of Damage Over Time effects, lets call them "Shadow Flame" "Arcane Flame" & "Holy Flame".

Now you set the Effect Tag to "Burn" on all 3 of these effects.

You create a Dispel Effect called "Cleanse Flames" > set the "Dispel Type" to "Effect Tag" > then in the field below you set the tag to "Burn".

Now whenever either "Shadow Flame", "Arcane Flame" or "Holy Flame" are applied to you, you can use "Cleanse Flames" to clear any of these Damage Over Time effects. You can even clear all 3 of them at once because the "Cleanse Flames" will remove any effect that has its "Effect Tag" field set to "Burn".

You set a "Use Requirement" on the "Cleanse Flames" ability from earlier.

The requirement is as follows: Type = Effect || Rule = Mandatory || State - Active || Condition = EffectTag || Effect Tag = Burn

This means that "Cleanse Flames" can only be used once the player is affected by an effect with the Effect Tag, Burn.

So the player can only use "Cleanse Flames" if they are affected by "Shadow Flame", "Arcane Flame" or "Holy Flame".