What’s with the dreaded Vanguard?
Simply as what its description says, “the discarded mantlet of one of Gul’dan’s Death Knights, Vanguard defends its wielder from even the most vicious of attacks with ease. Gives +300 hit points, 6 hit points regenerated per second and 70% chance to block 40 damage.”
Its cost will total of about 2,225 golds.
To break the myths and fears, let’s break down what Vanguard offers to every hero that wields it.
Vanguard only blocks damage that’s reduced by armor (except Exorcism) anyway.
If you have more than one source of Damage Block, the chances will be calculated in reverse order of acquisition, and only one will take place.
Vanguard possesses a passive skill of Hardened Skin. Hardened Skin does nothing of weakening stun and silences, etc. Vanguard will NOT reduce the length of any debuffs, ever. Vanguard has no percentage to block spell damage but only physical damage.
This means that is you can have a greater chance to block if you have more than one Stout Shield or Vanguard, you will have a greater chance, but not double the chance.
With Kraken Shell, things are different, since it has 100% chance. So, in order to make it work with Vanguard or Stout Shield, you need to make sure it will be the last that is checked. So you’ll need to drop the items and pick them up again after you learn the first level of Kraken Shell.
2 vanguards = 140% chance of blocking
3 vanguards = 210% chance of blocking
6 vanguards = 420% chance of blocking
You might think of it but it’s not the way Vanguard goes.
They stack diminishingly and you can only have damage block of one at a time. The more Vanguards you have, the less the first one will be used since blocking items are checked in order of acquisition (or possibly reverse order) in a way so if multiple items proc only the last gotten one will take effect. That’s why it’s so bad to stack them.
Best thing to do, is to never get 2 vanguards.
If the first one doesn’t block the damage the second one will once again have another 70% chance to block the damage.
A single damage instance can’t be blocked twice by 2 different damage block skills. The damage block doesn’t stack, but the chance to proc will stack diminishingly.
The total chance to block damage is then 1-(1-x)(1-y)(1-z)….
where x,y,z and so on are the chances to block the damage from the singly damage block sources.
The damage block amount doesn’t stack. The damage block sources are checked in reverse order of acquisition. The first that procs defines the amount of damage blocked, all others are ignored.
With 2 vanguards you’d have a total chance to block of 1-(1-0.7)(1-0.7)=.91
equals 91% . Damage amount block-able remains the same with 40 but 20 with long-ranged enemies.
Vanguard and Kraken Shell both use the Hardened Skin ability to provide the damage reduction. Damage block is applied BEFORE Armor Type and Armor Value
See Order of damage calculations
Mathematics and logic… Amazing how far I can get by just playing DOTA. Blog out!
Source: DOTA-Allstars Forum
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