How do tank mitigations stack?

[Saimeren]

Hey, so I'm curious how the tank mitigations interact with one another. Generally speaking we have Rampart at 20%, Reprisal, a 10% damage debuff to put on enemies and then a 30% reduction skill. We then have our 25 sec CD job ability. (Sheltron/TBN ect)

How do these stack, and is it worth it to stack them?

If I use Rampart and then Sentinel, what's the upper most reduction I'm getting out of that? It definitely doesn't feel like a 50% reduction.

What are the diminishing returns for each interaction? And do the self buffs work differently from Reprisal in regards to total incoming damage and reduction?

Ps. Use small numbers. Lol. Explain it to me as if I were a child. >_>.

[Xiaoki]

Hey, so I'm curious how the tank mitigations interact with one another. Generally speaking we have Rampart at 20%, Reprisal, a 10% damage debuff to put on enemies and then a 30% reduction skill. We then have our 25 sec CD job ability. (Sheltron/TBN ect)

How do these stack, and is it worth it to stack them?

If I use Rampart and then Sentinel, what's the upper most reduction I'm getting out of that? It definitely doesn't feel like a 50% reduction.

What are the diminishing returns for each interaction? And do the self buffs work differently from Reprisal in regards to total incoming damage and reduction?

Ps. Use small numbers. Lol. Explain it to me as if I were a child. >_>.

The effects are separate.

So, if you use Rampart and Sentinel together they reduce damage taken separately.

If you were to take 100 damage then Rampart would reduce it by 20% to 80 damage, then Sentinel would reduce that 80 damage by 30% for a total damage of 56.

[QooEr]

mitigation in this game stacks multiplicatively. So using rampart and reprisal means youll end up with a 28% damage reduction instead of a 30% damage reduction. The diminishing returns are extremely dependent on the combination used, but you can check it with simple math (1-a)*(1-b).
This means that technically, you get more out of each mitigation cooldown if you use them on their own, however, in high end content several attacks will require multiple mitigations to be used to survive an attack, so stacking is sometimes inevitable. In dungeons, trash packs often die before you use every single cooldown, so stacking one or two them is fine as well. Just keep in mind that the more cooldowns you stack, the less effective the next one becomes.

[Saimeren]

That's awesome, thanks a lot for the answers guys. I appreciate it.

[Seraphor]

Further more, this is why it can be better to stack different types of mitigation.
For example a shield (TBN) with a damage reduction (Rampart) will actually complement each other, as you're reducing the amount of damage being taken, which allows the shield to cover more of that damage.

e.g. You have 1000 HP, you use TBN for a 250 HP shield, and Rampart for a 20% damage reduction. This allows the TBN to cover 312 raw damage.

[Erik501]

Don't forget Arm's length. The slow that it applies is a very valuable defensive tool in big pulls.

[Saimeren]

Don't forget Arm's length. The slow that it applies is a very valuable defensive tool in big pulls.

We're talking about damage mitigation abilities, not utility.

[Ryaduera]

Don't forget Arm's length. The slow that it applies is a very valuable defensive tool in big pulls.

Arm's Length will still cause diminishing returns. Let's say you get hit by 1000 10 times for 10000 total damage.. Ramparts on its own reduces that by 2000, Arm's Length on its own reduces it to 8 attacks meaning it reduces incoming damage by 2000 as well, resulting in 8000 total damage and then adding Ramparts would technically lose value and reduce 1600 damage. Not disagreeing, just clarifying something.

We're talking about damage mitigation abilities, not utility.

Arm's Length is a form of mitigation since slow effects reduce incoming DPS. Many non-tanks and sprouts miss this part, but when trash pulls hit you with Arm's Length it applies a slow to reduce their attack rates which is a very good form of damage reduction.

[Oizen]

We're talking about damage mitigation abilities, not utility.

Arms Length is actually one of the best mitigation tools for trash mobs in the game.

[Saimeren]

Arms Length is actually one of the best mitigation tools for trash mobs in the game.

Sure, you're right, but that's not necessarily what I was asking about. I wasn't asking about all the good ways to avoid damage, but simply how certain abilities with percent reductions stacked. Not necessarily avoidances.