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What is the width of the cone fire breath of the Drakin (a homebrewed race)? I know it's however long, but how wide is it at the end of the cone? Is it wide enough to maybe hit multiple targets?

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    \$\begingroup\$ Your question might be answered here: How do I map a 15' cone to a 1" grid? \$\endgroup\$ – Icyfire Dec 30 '16 at 6:43
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    \$\begingroup\$ FYI: The Drakin is a homebrew race (i.e. custom, made by some random person on the internet) and isn't actually published materials. See the bottom category bar. Dandwiki is full of homebrew stuff. \$\endgroup\$ – doppelgreener Dec 30 '16 at 8:21
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Cone-shaped breath weapons follow the rules for cone-shaped effects. These are found on page 204 of the PHB in the Spellcasting section. In particular, it reads

A cone's width at a given point along its length is equal to that point's distance from the point of origin.

Thus, it will take up multiple squares and potentially hit multiple targets.

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  • \$\begingroup\$ Perhaps of some interest: this results in an angle of 2*arctan(.5) - roughly 53°. \$\endgroup\$ – Conduit Jan 2 '17 at 1:11

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