diff --git a/server/src/game.rs b/server/src/game.rs
index 2ea31420..9669dc30 100644
--- a/server/src/game.rs
+++ b/server/src/game.rs
@@ -1429,6 +1429,9 @@ mod tests {
         let x_cryp = x_player.cryps[0].clone();
         let y_cryp = y_player.cryps[0].clone();
 
+        // make the purify cryp super fast so it beats out decay
+        game.cryp_by_id(y_cryp.id).unwrap().speed.force(10000000);
+
         game.cryp_by_id(x_cryp.id).unwrap().learn_mut(Skill::Decay);
         while game.cryp_by_id(x_cryp.id).unwrap().skill_on_cd(Skill::Decay).is_some() {
             game.cryp_by_id(x_cryp.id).unwrap().reduce_cooldowns();
@@ -1467,7 +1470,8 @@ mod tests {
 
         while let Some(Resolution { source: _, target: _, event }) = game.resolved.pop() {
             match event {
-                Event::Damage { amount: _, skill: _, mitigation: _, colour: _ } => panic!("{:?} damage event", event),
+                Event::Damage { amount: _, skill: _, mitigation: _, colour: _ } =>
+                    panic!("{:?} damage event", event),
                 _ => (),
             }
         };
@@ -1486,7 +1490,8 @@ mod tests {
 
         while let Some(Resolution { source: _, target: _, event }) = game.resolved.pop() {
             match event {
-                Event::Damage { amount: _, skill: _, mitigation: _, colour: _ } => panic!("{:?} damage event", event),
+                Event::Damage { amount: _, skill: _, mitigation: _, colour: _ } =>
+                    panic!("{:#?} {:#?} damage event", game.resolved, event),
                 _ => (),
             }
         };
diff --git a/server/src/skill.rs b/server/src/skill.rs
index 998dbad3..96b16c90 100644
--- a/server/src/skill.rs
+++ b/server/src/skill.rs
@@ -35,7 +35,7 @@ pub fn pre_resolve(cast: &Cast, game: &mut Game, mut resolutions: Resolutions) -
         if cast.is_tick && target.effects.iter().find(|ce| match ce.tick {
             Some(t) => t.id == cast.id,
             None => false,
-        }).is_some() {
+        }).is_none() {
             continue;
         }
 
@@ -1405,7 +1405,7 @@ fn purify(source: &mut Cryp, target: &mut Cryp, mut results: Resolutions, skill:
     let amount = source.green_damage().pct(skill.multiplier());
     while let Some(i) = target.effects
         .iter()
-        .position(|ce| [Category::Debuff, Category::Debuff].contains(&ce.effect.category())) {
+        .position(|ce| Category::Debuff == ce.effect.category()) {
             let ce = target.effects.remove(i);
             results.push(Resolution::new(source, target).event(Event::Removal { effect: ce.effect }));
             target.deal_green_damage(skill, amount)