diff --git a/project/hexic/src/main/scala/org/eu/net/pool/hexic/main.scala b/project/hexic/src/main/scala/org/eu/net/pool/hexic/main.scala
index 52a530d..fa5d700 100644
--- a/project/hexic/src/main/scala/org/eu/net/pool/hexic/main.scala
+++ b/project/hexic/src/main/scala/org/eu/net/pool/hexic/main.scala
@@ -995,21 +995,6 @@ def iotaInt(iota: Iota, under: Int, er: => Nothing): Int =
 trait MutableFunction[T, R] extends (T => R):
   def update(key: T, value: R): Unit
 
-extension (img: CastingImage)
-  def apply(stack: Seq[Iota] = img.getStack.toSeq,
-            parenCount: Int = img.getParenCount,
-            parenthesized: Seq[ParenthesizedIota] = img.getParenthesized.toSeq,
-            escapeNext: Boolean = img.getEscapeNext,
-            opsConsumed: Long = img.getOpsConsumed,
-            userData: NbtCompound = img.getUserData) =
-    CastingImage(stack = stack,
-                 parenCount = parenCount,
-                 parenthesized = parenthesized,
-                 escapeNext = escapeNext,
-                 opsConsumed = opsConsumed,
-                 userData = userData,
-                 null : DefaultConstructorMarker)
-
 def init(): Unit =
   given_Logger.info:
     val possible = Seq(
@@ -2167,6 +2152,8 @@ trait MediaContainerProvider:
   @targetName("hexic$MediaContainerProvider$getMediaContainer")
   def getMediaContainer(c: Context): Option[MediaContainer]
 
+extension [T] (x: => T) def trying: Try[T] = Try(x)
+
 object registerHopperEndpoint extends (() => Unit):
   def apply(): Unit =
     HopperEndpointRegistry.INSTANCE.register: (iota: Iota, env: CastingEnvironment, slot: Integer) =>
diff --git a/util/changelog b/util/changelog
index 2bb7803..1243906 100644
--- a/util/changelog
+++ b/util/changelog
@@ -2,3 +2,5 @@
 0.1.2 documented Flock's Disintegration and Speaker's Distillation for maps
 0.1.2 intrusive holder allocation tracking
 0.1.2 made maps insertion-ordered
+0.1.3 added arm and hand utils
+0.1.3 added casting image and cast result updaters
diff --git a/util/gradle.properties b/util/gradle.properties
index 43d0b1a..96827e5 100644
--- a/util/gradle.properties
+++ b/util/gradle.properties
@@ -2,7 +2,7 @@ minecraft_version=1.20.1
 yarn_mappings=1.20.1+build.10
 loader_version=0.16.14
 scala_loader_version=0.3.1.11
-version=0.1.2
+version=0.1.3
 maven_group=org.eu.net.pool
 modid=phlib
 archives_base_name=phlib
diff --git a/util/src/main/scala/org/eu/net/pool/phlib/main.scala b/util/src/main/scala/org/eu/net/pool/phlib/main.scala
index 6ba3456..1cb898b 100644
--- a/util/src/main/scala/org/eu/net/pool/phlib/main.scala
+++ b/util/src/main/scala/org/eu/net/pool/phlib/main.scala
@@ -22,7 +22,7 @@ import net.minecraft.nbt.*
 import net.minecraft.server.command.ServerCommandSource
 import net.minecraft.server.network.ServerPlayerEntity
 import net.minecraft.server.world.ServerWorld
-import net.minecraft.util.Hand
+import net.minecraft.util.{Arm, Hand}
 import net.minecraft.util.dynamic.Codecs
 
 import scala.annotation.tailrec
@@ -225,6 +225,59 @@ implicit class IterOnceExt[T](i: IterableOnceOps[T, ?, ?]):
           else
             Some(x)
 
+extension (arm: Arm)
+  def ^(hand: Hand): Arm = arm ^ (hand == Hand.MAIN_HAND)
+  def ^(invert: Boolean): Arm = if invert then arm.getOpposite else arm
+  def ^(OtherArm: Arm): Hand = arm match
+    case OtherArm => Hand.MAIN_HAND
+    case _ => Hand.OFF_HAND
+extension (hand: Hand)
+  def ^(arm: Arm): Arm = arm ^ hand
+  def ^(invert: Boolean): Hand =
+    if invert then
+      hand match
+        case Hand.MAIN_HAND => Hand.OFF_HAND
+        case Hand.OFF_HAND => Hand.MAIN_HAND
+    else hand
+
+extension (t: Throwable) def toMishap =
+  t match
+    case m: Mishap => m
+    case e: Exception => MishapInternalException(e)
+    case _ => MishapInternalException(RuntimeException(t))
+
+extension [T] (x: => T) def trying: Try[T] = Try(x)
+
+given castingImageUpdate: AnyRef with
+  extension (img: CastingImage)
+    def apply(stack: Seq[Iota] = img.getStack.toSeq,
+              parenCount: Int = img.getParenCount,
+              parenthesized: Seq[ParenthesizedIota] = img.getParenthesized.toSeq,
+              escapeNext: Boolean = img.getEscapeNext,
+              opsConsumed: Long = img.getOpsConsumed,
+              userData: NbtCompound = img.getUserData) =
+      CastingImage(stack = stack,
+                   parenCount = parenCount,
+                   parenthesized = parenthesized,
+                   escapeNext = escapeNext,
+                   opsConsumed = opsConsumed,
+                   userData = userData,
+                   null : DefaultConstructorMarker)
+given castResultUpdate: AnyRef with
+  extension (r: CastResult)
+    def apply(cast: Iota = r.getCast,
+              continuation: SpellContinuation = r.getContinuation,
+              newData: Option[CastingImage] = Option(r.getNewData),
+              sideEffects: Seq[OperatorSideEffect] = r.getSideEffects.toSeq,
+              resolutionType: ResolvedPatternType = r.getResolutionType,
+              sound: EvalSound = r.getSound) =
+      CastResult(cast = cast,
+                 continuation = continuation,
+                 newData = newData.orNull,
+                 sideEffects = sideEffects,
+                 resolutionType = resolutionType,
+                 sound = sound)
+
 extension (ctx: StringContext) def ifModLoaded(`then`: => Unit, `else`: => Unit = {}): Unit =
   if isDev || fabric.isModLoaded(ctx.parts(0)) then
     `then`