Arms of Hadar targets all creatures within ten feet, but I'm looking to cast Hunger of Hadar:<br/><br/><div class="quoteheader"><div class="topslice_quote">Quote</div></div><blockquote class="bbc_standard_quote">You open a gateway to the dark between the stars, a<br/>region infested with unknown horrors. A 20-foot-radius<br/>sphere o f blackness and bitter cold appears, centered<br/>on a point with range and lasting for the duration. This<br/>void is filled with a cacophony o f soft whispers and<br/>slurping noises that can be heard up to 30 feet away. No<br/>light, magical or otherwise, can illuminate the area, and<br/>creatures fully within the area are blinded.<br/>The void creates a warp in the fabric of space, and the<br/>area is difficult terrain. Any creature that starts its turn<br/>in the area takes 2d6 cold damage. Any creature that<br/>ends its turn in the area must succeed on a Dexterity<br/>saving throw or take 2d6 acid damage as milky,<br/>otherworldly tentacles rub against it.<br/></blockquote><div class="quotefooter"><div class="botslice_quote"></div></div><br/>If I put the radius point right up against the door, it'll extend ten feet into our room, and when the door opens it'll no longer block line of effect and the sphere will spread ten feet into the hallway/tunnel.