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Message: <blockquote data-quote="Zelc" data-source="post: 4583695" data-attributes="member: 40496">(Lots of edits happened.)The rules for determining cover can be used to create line effects for powers.  Important: it's best used sparingly as this takes a lot of time to resolve (you can pick one of four corners and that can result in different stuff between hit).  However, if you have a cool effect in mind that would be best described as a line, this is how you can do it.If you want to do this without creating new terms, have a secondary attack or whatever that targets any creature or object that grants cover to the original target.  If you want this to affect allies, it's more difficult <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f641.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":(" title="Frown    :("  data-smilie="3"data-shortname=":(" />.  All creatures or objects that would grant cover to the original target if they weren't your ally?For example:Magicannon "Final Spark"Laser... is not difficult.Daily *** Arcane, Implement, RadiantStandard Action *** Area 1 square within 10 squaresTarget: All creatures in the areaAttack: Int vs. RefHit: 8d8 + Intelligence modifier radiant damage.Miss: Half damageEffect: Make a secondary attack against all creatures that provides cover to the square.Secondary Attack: Int vs. RefHit: 8d8 + Intelligence modifier radiant damageMiss: Half damageIt's probably better to define a new area instead, since the simple method can't do zones and has trouble with hitting allies.  We'll call it a "line" area.Line X: A line fills X contiguous squares within range, starting from a square adjacent to the origin square (usually the square the user of the power is standing in) and ending in a terminal square within range X.  Draw a line from the center of the origin square to the center of the terminal square; all squares in this area must fall on squares passed through by the line.  The area cannot include the origin square, nor can any two squares in the area be equally distant from the origin square.  You can arrange the area however you like, subject to the above restrictions.[sblock=Old, doesn't work]To create a line area, pick one square within range (i.e. for an Area line 5 power, pick one square no more than 5 squares away from you), then draw lines from each corner of the origin square to each corner of the chosen square.  The line area covers the chosen square and each square one of the lines touches.  For example, a Line 5 area covers all squares between the origin square and a chosen square up to 5 squares away, including the chosen square.[/sblock]For example:Magicannon "Final Spark"Laser... is not difficult.Daily *** Arcane, Implement, RadiantStandard Action *** Area line 10Target: All creatures in the areaAttack: Int vs. RefHit: 8d8 + Intelligence modifier radiant damage.Miss: Half damageUnroll Red CarpetThe universal symbol of celebrityDaily *** Martial, ZoneStandard Action *** Area line 5Effect: You and your allies gain a +5 bonus to Bluff and Diplomacy checks when inside the area.  This effect lasts until the end of the encounter or until the red carpet is removed or destroyed (whichever comes first).[sblock=Old stuff, probably not needed]It's best to define a new "key term" (more like 'cover' than 'necrotic').  Let's use between.  The easier to explain but not as flexible definition is: A creature or object is considered between an origin square and a terminal square (or a creature in a terminal square) if it would provide cover to a creature in the terminal square from a ranged attack originating in the origin square.  You know the drill: pick a corner from the origin square, draw lines to the four corners of the terminal square, and everyone the line is touching gets a happy face or a frowny face.The more flexible definition is basically the same as above, except it also "hits" squares (for zones) and allies (for good effects).  To determine if a creature or object is between an origin square and a terminal square, pick a corner from the origin square and draw a line from it to every corner on the terminal square.  All squares and creatures and objects in those squares are considered between the origin square and the terminal square.I'd use the more flexible definition.  The less flexible definition is useful to explain the general idea (would it provide cover?), but between can also include squares and allies.[/sblock]</blockquote>

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