diff --git a/core/src/construct.rs b/core/src/construct.rs
index 03595135..216c2dd0 100644
--- a/core/src/construct.rs
+++ b/core/src/construct.rs
@@ -7,7 +7,7 @@ use failure::Error;
 use failure::err_msg;
 
 use skill::{Skill, Cast};
-use game::{Colour, Disable, Event, EventConstruct};
+use game::{Colour, Disable, Immunity, Event, EventConstruct};
 use effect::{Cooldown, Effect};
 use spec::{Spec};
 use item::{Item};
@@ -954,7 +954,7 @@ impl Construct {
 
                     let skill = match meta {
                         Some(EffectMeta::CastOnHit(s)) => s,
-                        _ => panic!("no electrify skill"),
+                        _ => panic!("no electrify skill {:?}", meta),
                     };
 
                     casts.push(Cast::new(self.id, self.account, cast.source, *skill));
@@ -979,7 +979,7 @@ impl Construct {
 
                     let skill = match meta {
                         Some(EffectMeta::CastOnHit(s)) => s,
-                        _ => panic!("no counter skill"),
+                        _ => panic!("no counter skill {:?}", meta),
                     };
 
                     casts.push(Cast::new(self.id, self.account, cast.source, *skill));
diff --git a/core/src/effect.rs b/core/src/effect.rs
index 6d44d987..d9d4e7b8 100644
--- a/core/src/effect.rs
+++ b/core/src/effect.rs
@@ -87,10 +87,32 @@ impl Effect {
             ].contains(&skill),
 
             Effect::Siphoned => [
+                Skill::Siphon,
+                Skill::SiphonPlus,
+                Skill::SiphonPlusPlus,
                 Skill::SiphonTick,
                 Skill::SiphonTickPlus,
                 Skill::SiphonTickPlusPlus,
             ].contains(&skill),
+
+            Effect::Decayed => [
+                Skill::Decay,
+                Skill::DecayPlus,
+                Skill::DecayPlusPlus,
+                Skill::DecayTick,
+                Skill::DecayTickPlus,
+                Skill::DecayTickPlusPlus,
+            ].contains(&skill),
+
+            Effect::Triaged => [
+                Skill::Triage,
+                Skill::TriagePlus,
+                Skill::TriagePlusPlus,
+                Skill::TriageTick,
+                Skill::TriageTickPlus,
+                Skill::TriageTickPlusPlus,
+            ].contains(&skill),
+
             _ => false,
         }
     }
diff --git a/core/src/game.rs b/core/src/game.rs
index e7c6b391..d5adb9b5 100644
--- a/core/src/game.rs
+++ b/core/src/game.rs
@@ -17,6 +17,10 @@ use util::{IntPct};
 use player::{Player};
 use instance::{TimeControl};
 
+pub type Disable = Vec<Effect>;
+pub type Immunity = Vec<Effect>;
+pub type Direction = (i8, i8);
+
 #[derive(Debug,Clone,Serialize,Deserialize)]
 pub struct Game {
     pub id: Uuid,
@@ -173,8 +177,6 @@ impl Game {
         }
         self.phase = Phase::Skill;
 
-        self.resolutions.push(vec![]);
-
         self.phase_start = Utc::now()
             .checked_add_signed(Duration::milliseconds(resolution_animation_ms))
             .expect("could not set phase start");
@@ -394,6 +396,7 @@ impl Game {
             panic!("game not in skill phase");
         }
         self.phase = Phase::Resolve;
+        self.resolutions.push(vec![]);
         // self.log.push("<Resolve Phase>".to_string());
 
         self.resolve_stack()
@@ -528,6 +531,11 @@ impl Game {
             return self;
         }
 
+        if let Some(immunity) = self.construct(cast.target).immune(cast.skill) {
+            self.add_resolution(&cast, &Event::Immune { construct: cast.target, effects: immunity });
+            return self;
+        }
+
         if self.construct(cast.target).affected(Effect::Reflect) && cast.skill.colours().contains(&Colour::Blue) && !cast.skill.is_tick() {
             self.add_resolution(&cast, &Event::Reflection { construct: cast.target });
 
@@ -923,9 +931,6 @@ impl Resolution {
     }
 }
 
-pub type Disable = Vec<Effect>;
-pub type Direction = (i8, i8);
-
 #[derive(Debug,Clone,PartialEq,Serialize,Deserialize)]
 pub enum Event {
     Cast        { construct: Uuid, player: Uuid, direction: Direction },
@@ -940,6 +945,7 @@ pub enum Event {
     Inversion   { construct: Uuid },
     Reflection  { construct: Uuid },
     Disable     { construct: Uuid, effects: Vec<Effect> },
+    Immune      { construct: Uuid, effects: Vec<Effect> },
 
     TargetKo    { construct: Uuid },
     Ko          { construct: Uuid },
@@ -1011,6 +1017,7 @@ impl Event {
 
             Event::TargetKo { construct: _ } |
             Event::Disable { construct: _, effects: _ } |
+            Event::Immune { construct: _, effects: _ } |
             Event::Forfeit() => Animation::Skip,
         }
     }
@@ -1100,7 +1107,8 @@ mod tests {
 
         assert!(game.can_start());
 
-        return game.start();
+        game = game.start();
+        return game.resolve_phase_start();
     }
 
     fn create_2v2_test_game() -> Game {
@@ -1146,7 +1154,8 @@ mod tests {
 
         assert!(game.can_start());
 
-        return game.start();
+        game = game.start();
+        return game.resolve_phase_start();
     }
 
     // #[test]
@@ -1813,17 +1822,14 @@ mod tests {
 
         // que ota?
         game.resolve(Cast::new(source, player_id, target, Skill::Siphon));
-        game = game.resolve_phase_start();
-
-        let last = game.resolutions.len() - 2;
+        let last = game.resolutions.len() - 1;
         let resolutions = &game.resolutions[last];
 
-        println!("{:#?}", game.resolutions);
-
         let damage_events = resolutions.iter().filter(|r| match r.event {
             Event::Damage { construct, colour, amount, mitigation: _, display: _ } => true,
             _ => false,
         }).count();
+
         assert_eq!(damage_events, 1);
     }