add Mind level 4 spells

spells/Mind4.tex

+\spell{Keening}% Name
+  {\mWater, \mFate}% Spheres
+  {Wane}% Action
+  {\distant, \detailed, \divergent}% Enhancements
+  {\roll{Wits}{Academics}}% Resist with
+  {the target takes a -\arabic{spelllevel} penalty to Mind Attributes when presented with a particular stimulus, and takes a -1 penalty to the next \arabic{spelllevel} actions interacting with it}% Description
+  {
+    The caster shouts to the target about their imminent death (perhaps mentioning horses, long journeys, or poison slipped into their food).
+    The target becomes intensely paranoid about that topic.
+
+    The next \arabic{spelllevel} rolls the target makes to interact with that stimulus receive a -1 penalty, and on top of that, all Mind Attributes take a -\arabic{spelllevel} penalty when interacting with their new phobia.
+  }