diff --git a/scripts/basePowers.js b/scripts/basePowers.js
index 1870e83..4c6387b 100644
--- a/scripts/basePowers.js
+++ b/scripts/basePowers.js
@@ -125,7 +125,7 @@ export class PowerEffect {
   get menuInputs () {
     const inputs = [
       { type: 'header', label: `${this.name} Effect` },
-      { type: 'info', label: `Apply ${this.name} Effect` },
+      { type: 'info', label: `Apply ${this.name} Effect (base cost ${this.basePowerPoints} pp)` },
     ]
     if (this.isTargeted) {
       let label = `<strong>Targets:</strong> ${this.targets.map(t => t.name).join(',')}`
@@ -265,7 +265,7 @@ export class PowerEffect {
     if (!this.usePrimaryEffect) {
       icon = this.icon
     }
-    const doc = this.createEffectDocument(icon, `Maintaining ${this.name}`, [])
+    const doc = this.createEffectDocument(icon, `Maintaining ${this.effectName}`, [])
     doc.duration.rounds = this.duration
     doc.description += this.description
     doc.flags.swade.expiration = CONFIG.SWADE.CONST.STATUS_EFFECT_EXPIRATION.EndOfTurnPrompt
diff --git a/scripts/powers.js b/scripts/powers.js
index b778db2..ba0643a 100644
--- a/scripts/powers.js
+++ b/scripts/powers.js
@@ -51,8 +51,8 @@ class BanishEffect extends PowerEffect {
         options: [
           {html: 'None', value: 0, selected: true},
           {html: 'Small Blast Template (+1)', value: 1, selected: false},
-          {html: 'Medium Blast Template (+2)', value: 1, selected: false},
-          {html: 'Large Blast Template (+3)', value: 1, selected: false},
+          {html: 'Medium Blast Template (+2)', value: 2, selected: false},
+          {html: 'Large Blast Template (+3)', value: 3, selected: false},
         ]})
     return inputs
   }
@@ -718,7 +718,7 @@ class DamageFieldEffect extends PowerEffect {
 
 class DarksightEffect extends PowerEffect {
   get name () { return 'Darksight' }
-  get icon () { return 'icons/magic/perception/third-eye-blue-red.webp' }
+  get icon () { return 'icons/magic/perception/eye-ringed-glow-angry-small-teal.webp' }
   get duration () { return 600 }
   get basePowerPoints () { return 1 }
   get isTargeted () { return true }
@@ -784,6 +784,90 @@ class DeflectionEffect extends PowerEffect {
   }
 }
 
+class DetectConcealArcanaEffect extends PowerEffect {
+  get name () { return 'Detect/Conceal Arcana' }
+  get icon () { return this.data.detect ?
+    'icons/magic/perception/third-eye-blue-red.webp' :
+    'icons/magic/perception/silhouette-stealth-shadow.webp' }
+  get duration () { return this.data.detect ? 5 : 600 }
+  get basePowerPoints () { return 2 }
+  get isTargeted () { return true }
+  get hasAdditionalRecipients () { return true }
+  get additionalRecipientCost () { return (this.data?.aoe || 0) > 0 ? 0 : 1 }
+  get modifiers () {
+    const mods = super.modifiers
+    mods.push({name: 'Alignment Sense (detect)', value: 1, id: 'alignment', epic: false, effect: false})
+    mods.push({name: 'Identify (detect)', value: 1, id: 'identify', epic: false, effect: false})
+    mods.push({name: 'Strong (conceal)', value: 1, id: 'strong', epic: false, effect: false})
+    return mods
+  }
+  get hasAoe () { return true }
+  get menuInputs () {
+    const inputs = super.menuInputs
+    inputs.push({ type: 'select', label: 'Area of Effect (conceal)',
+      options: [
+        {html: 'None', value: 0, selected: true},
+        {html: 'Medium Blast Template (+1)', value: 1, selected: false},
+        {html: 'Large Blast Template (+2)', value: 2, selected: false},
+      ]})
+    inputs.push({type: 'info', label: 'Detect or Conceal?'})
+    inputs.push({type: 'radio', label: 'Detect', options: ['isDetect', true]})
+    inputs.push({type: 'radio', label: 'Conceal', options: ['isDetect', false]})
+    return inputs
+  }
+  async parseValues () {
+    await super.parseValues()
+    this.data.aoe = this.data.values.shift()
+    this.data.values.shift()
+    this.data.detect = this.data.values.shift()
+  }
+  get powerPoints () {
+    return super.powerPoints + this.data.aoe
+  }
+  get effectName () {
+    return `${this.data.detect ? 'Detect' : 'Conceal'} Arcana`
+  }
+  get description () {
+    let desc = super.description
+    if (this.data.detect) {
+      desc += `<p>The recipient can see and detect all supernatural persons,
+        objects, or effects in sight. This includes invisible foes, enchanted
+        objects, and so on.`
+      if (this.data.raise) {
+        desc += `Since this was major Detect Arcana, the type of enchantments
+          is also known.`
+      }
+      desc+= `</p><p>If cast to learn more about a creature, the caster learns
+        active powers and arcane abilities.`
+      if (this.data.raise) {
+        desc += `As major Detect in this mode, the caster also learns any
+          Weaknesses common to that creature type.`
+      }
+      if (this.data.mods.has('identify')) {
+        desc += `<p>Items detected also give the recipient an idea of their
+          powers and how to activate them.</p>`
+      }
+      if (this.data.mods.has('alignment')) {
+        desc += `<p>The recipient can also detect the presence and location
+          of supernatural good or evil within range, regardless of line of sight.</p>`
+      }
+      desc += `</p><p><strong>Invisible Creatures:</strong> The recipient may
+        also ignore ${this.data.raise ? 'all' : 'up to 4 points of'} penalties
+        when attacking invisible or magically concealed foes.</p>`
+    } else {
+      let area = 'one item or being'
+      if (this.data.aoe !== 0) {
+        area = `everything in a sphere the size of a
+          ${this.data.aoe === 1 ? 'Medium' : 'Large'} Blast Template`
+      }
+      desc += `<p>Conceal ${area} from the Detect Magic ability for
+        one hour. Attempts to <em>detect arcana</em> suffer a
+        ${(this.data.mods.has('strong') ? -2 : 0) + this.data.raise ? -2 : -4} penalty.`
+    }
+    return desc
+  }
+}
+
 const PowerClasses = {
   "arcane-protection": ArcaneProtectionEffect,
   banish: BanishEffect,
@@ -801,6 +885,7 @@ const PowerClasses = {
   "damage-field": DamageFieldEffect,
   darksight: DarksightEffect,
   deflection: DeflectionEffect,
+  "detect-conceal-arcana": DetectConcealArcanaEffect,
   "lower-trait": BoostLowerTraitEffect,
 }