Movement speed debuffs

[Ravoc-DDO]

I was wondering whether or not some or all of the effects of crippling, tendon slice, hamstring and strength sapping stack.
More notably, the movement speed aspect. Can such a combination bring a mob down to 6% movement speed?

[TeacherSyn]

I was wondering whether or not some or all of the effects of crippling, tendon slice, hamstring and strength sapping stack.
More notably, the movement speed aspect. Can such a combination bring a mob down to 6% movement speed?

Great question.

Looking at the DDO Wiki, we get these definitions.

• Crippled: A crippled creature's movement is slowed by half
• Tendon Slicing: Inflicts a hamstring like effect (-50% movement speed, and stacks with hamstring) on a target on a successful proc for a very short duration (~10 seconds). Doesn't work on Red and Purple named monsters. Comes in magnitudes of 2%, 4%, 6%, 8% and 10%.
• Hamstring: When this feat is activated, a melee special attack is made. If it hits, the target's movement rate is reduced by 50% for 12 seconds. Unlike Trip and Stunning Blow, no save is made against this effect
• Strength Sapping: Every time this weapon deals damage, the target must succeed on a Fortitude save (DC 15) or become exhausted (A exhausted creature takes a -50% penalty to movement speed, -6 penalty to Strength and Dexterity, and cannot tumble. May be cured completely by the spells Heal, (Greater) Restoration, or Panacea.) Note: Stat debuffs from exhausted stacks with Ray of Enfeeblement and Waves of Exhaustion.

It looks like the effects are much the same in terms of movement speed reduced by half. There's a matter of duration of each of the effects or whether there is a save possible. To your question: It seems that Crippling is a special function to itself, while Tendon Slicing is an effect that works as Hamstring itself. Strength Sapping creates a new effect, Exhaustion. Its info noted that debuffs from its ability also stack with Ray of Enfeeblement and Waves of Exhaustion.

I'll let others try to answer but I think you might have hit on something in terms of what could stack. The larger problem is how long the slowing effects will stick if they do stack.