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Creating a Challenging monster for a Lvl 20 party
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<blockquote data-quote="Jaelommiss" data-source="post: 7330289" data-attributes="member: 6775925"><p>At challenge rating >17 each damage immunity earns a 1.25x multiplier on effective hit points. There are thirteen damage types. 1.25^13=18.190. By dividing a creature's HP by 19 (we'll round it up, because we are merciful DMs) you can give it immunity to all damage types. At CR 20 we are looking at 380 HP, which divides nicely down to 20 HP. Weaknesses include Power Word Kill and damage carried over from being hit while Polymorphed into a toad.</p><p></p><p>Honestly, I don't think we even need to add much to this to make it an interesting threat. This could very easily be placed on whatever dragon or demon or other monster you desire. The challenge comes from finding a way to effectively harm this thing.</p></blockquote><p></p>
[QUOTE="Jaelommiss, post: 7330289, member: 6775925"] At challenge rating >17 each damage immunity earns a 1.25x multiplier on effective hit points. There are thirteen damage types. 1.25^13=18.190. By dividing a creature's HP by 19 (we'll round it up, because we are merciful DMs) you can give it immunity to all damage types. At CR 20 we are looking at 380 HP, which divides nicely down to 20 HP. Weaknesses include Power Word Kill and damage carried over from being hit while Polymorphed into a toad. Honestly, I don't think we even need to add much to this to make it an interesting threat. This could very easily be placed on whatever dragon or demon or other monster you desire. The challenge comes from finding a way to effectively harm this thing. [/QUOTE]
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Community
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Creating a Challenging monster for a Lvl 20 party
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