Magnitude

Use Magnitude for the strength of the effect created. Use Effect for the multiplier that usually comes from the affected target. The two are multiplicative. Duration, application chance, and buildup are separate unless the wording for a specific mechanic explicitly connects them.

Magnitude is creator-side strength

Magnitude modifiers normally come from whoever applies the Buff or Debuff. They scale the numeric values that effect applies to its target.

Effect is usually target-side

Modifiers to the Effect of a Buff or Debuff usually come from the affected target. Effect modifiers multiply the result of creator-side Magnitude modifiers rather than joining the same increased modifier total.

Duration is separate

Increasing Magnitude does not make an effect last longer. Duration needs its own modifier. The 0.5.0 Blackflame change lists Ignite Magnitude and Ignite Duration separately, and each value can be changed independently.

Damaging Ailment Magnitude is damage per second

For Bleeding, Poison, and Ignite, Magnitude is the damage dealt per second. Their durations are separate, so higher Magnitude raises damage per second while longer duration changes how long that damage can continue.

Chill Magnitude is the Slow

Chill Magnitude is the percentage Slow applied by Chill. Hit-based Chill depends on Chilling damage relative to the target's Elemental Ailment Threshold, with a 30% minimum and a default 50% maximum.

Shock Magnitude is increased damage taken

The ordinary Shock applies 20% increased damage taken. A modifier to Shock Magnitude changes that numeric penalty; it does not change the separate chance for a Hit to Shock unless its wording says so.

Flammability Magnitude is Ignite chance

Flammability Magnitude is the chance for Hits to Ignite the target. Its base is 1% Ignite chance for every 5% of the target's Ailment Threshold dealt as contributing Fire damage. Flammability stacks up to 100% total chance.

A modifier can target one value only

Slow Magnitude modifiers scale only the part of an inflicted Debuff that Slows. If that Debuff applies other numeric penalties, those other Magnitudes are not changed by a Slow Magnitude modifier.

Some effects are binary

An effect that is simply active or inactive may have no Magnitude. Generic Magnitude modifiers cannot strengthen a value that the effect does not have.