You can essentially double the number of squares covered by Acid Jet, depending on where you point. Seems like it should be a single square, not double.
Here´s what happens Linear spells work by drawing a straight line from the caster to the target. This straight line might cover squares that might otherwise be outside of your line of sight, which is why these spells are so useful. Look at your casting area, and imagine you are aiming your linear spell straight at the slime, now draw a line from yourself to the slime. See how your line goes straight through the middle of each square? That´s because its a straight diagonal. Tilt it slightly to a side, now what happens? It´s covering two complete lines of rows because it is now "strafing" through the side of two rows of squares. Do the experiment, go to paint, draw a line from the center of your wizard to the center of the final square, see what i mean. I dont have time to do that myself atm sadly. This is a feature of Linear spells, since otherwise it would be too difficult to reliaby land a hit on more than one target
