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Message: <blockquote data-quote="clearstream" data-source="post: 7269972" data-attributes="member: 71699">I thought it might be interesting to simulate Warcaster's impact on maintaining Concentration. The two characters have Constitution 14 and Intelligence 16 to start with. The left takes the ASI and the right takes the feat. The DC is assumed to be 10.[ATTACH]90684[/ATTACH]Reciprocal shows the naive expectation for number of hits until a Concentration failure. We expect to lose Concentration somewhere among 7 hits for the ASI versus about 25 for the feat.The red and green coloured block is the interesting part. With an assumption of taking 5 hits, how many occurrences of fails should be expected? Failing 0 times or more is 100%. Failing 1 time or more is 56% for the ASI and 18% for the feat.One confound is that the character taking the ASI gets hit slightly less often due to Intelligence improving AC: let's say that was a whole hit less.[ATTACH]90685[/ATTACH]The character taking the ASI is still close to 50/50 on losing Concentration. (The character would need to take at least 3 fewer hits to keep Concentration as successfully as the Warcaster.) As these values evolve, the gap stays about the same. For example, with both characters starting at Constitution 16 and Intelligence 18 (say at higher level), the Warcaster has only a 5% chance of losing Concentration once or more over five hits, against 20%-ish with the ASI.</blockquote>