![]() A rod of cancellation destroys a prismatic wall, but an Antimagic Field has no Effect on it. Once a layer is destroyed, it remains so for the Duration of the spell. The wall can be destroyed, also one layer at a time, in order from red to violet, by means specific to each layer. As it passes or reaches through each layer, the creature must make a Dexterity saving throw or be affected by that layer's Properties as described below. When a creature attempts to reach into or pass through the wall, it does so one layer at a time through all the wall's layers. The wall consists of seven layers, each with a different color. If another creature that can see the wall moves to within 20 feet of it or starts its turn there, the creature must succeed on a Constitution saving throw or become Blinded for 1 minute. You and Creatures you designate at the time you cast the spell can pass through and remain near the wall without harm. The wall sheds bright light out to a range of 100 feet and dim light for an additional 100 feet. If you position the wall so that it passes through a space occupied by a creature, the spell fails, and your Action and the spell slot are wasted. The wall remains in place for the Duration. Alternatively, you can shape the wall into a Sphere up to 30 feet in diameter centered on a point you choose within range. Then move it into place to align with the existing grid.A shimmering, multicolored plane of light forms a vertical opaque wall - up to 90 feet long, 30 feet high, and 1 inch thick - centered on a point you can see within range. And in my case I used the Dungen.app file which handily tells you the resolution at the bottom of the image (in this case 1190x1120px) which can be input into Roll20 by right-clicking on the image and choosing Advanced>Set Dimensions. This is where making sure the image matches the 70x70 pixel grid makes life easier. So, with the Map & Background Layer selected drag your image onto the page. It can take a few moments for the image to upload so you’ll need to be patient. The free version has 100mb of space which is plenty for a game or two but might get full if you use unnecessarily large artwork.). There you can import your map into your game(I have found that large jpegs and pngs don’t load so keep your file size down. To get images into Roll20 you need to go to the Art Library in the right pane and choose “My Library”. And the GM Info Overlay is where you can include notes and labels that only you can see. The Objects and Tokens layer is where you and your players will spend most of your time. You will need this active when dropping your map into your page. The first layer is the Map & Background layer. And then we get to to one of the trickier parts of being a GM in Roll20 - layers! If you are a dab hand at Photoshop (or similar) you can create a 70x70 grid to help you line everything up. ![]() So when creating your own it is good to use this as a guideline. The default resolution used in Roll20 is 70 pixels by 70 pixels. There are a few things to know when using maps in Roll20. For the purposes of this blog I am going to generate one randomly using You can draw one within Roll20, you can draw one in Photoshop or on paper and scan it or you can download an existing one from the internet. There are a number ways of sourcing a map. Have a map which I can share with my players.Ĭreate some simple character “tokens” which my players can move around the map.Ĭreate some tokens for my goblins and other adversaries. To run this game I want to do three main things. This pane also has other options at the top for managing the game. To the left of the grid is a toolbar and to the right is your chat pane.
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