diff --git a/common/src/comp/stats.rs b/common/src/comp/stats.rs
index def733e988..9c47b9a439 100644
--- a/common/src/comp/stats.rs
+++ b/common/src/comp/stats.rs
@@ -1,16 +1,17 @@
 use specs::{Component, FlaggedStorage, NullStorage, VecStorage};
+use crate::state::Time;
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct Health {
     pub current: u32,
     pub maximum: u32,
-    pub last_change: Option<(i32, f64)>,
+    pub last_change: Option<(i32, Time)>,
 }
 
 impl Health {
-    pub fn change_by(&mut self, amount: i32, current_time: f64) {
+    pub fn change_by(&mut self, amount: i32, current_time: Time) {
         self.current = (self.current as i32 + amount).max(0) as u32;
-        self.last_change = Some((amount, current_time));
+        self.last_change = dbg!(Some((amount, current_time)));
     }
 }
 
diff --git a/common/src/state.rs b/common/src/state.rs
index e42e78ed9a..a68687639a 100644
--- a/common/src/state.rs
+++ b/common/src/state.rs
@@ -28,7 +28,7 @@ const DAY_CYCLE_FACTOR: f64 = 24.0 * 60.0;
 pub struct TimeOfDay(f64);
 
 /// A resource that stores the tick (i.e: physics) time.
-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Copy, Clone, Debug, Default, Serialize, Deserialize)]
 pub struct Time(f64);
 
 /// A resource that stores the time since the previous tick.
diff --git a/common/src/sys/action.rs b/common/src/sys/action.rs
index e82bb67d95..2178c1f8fc 100644
--- a/common/src/sys/action.rs
+++ b/common/src/sys/action.rs
@@ -5,7 +5,7 @@ use vek::*;
 // Crate
 use crate::{
     comp::{phys::Pos, Action, Actions, Control, Stats},
-    state::DeltaTime,
+    state::{Time, DeltaTime},
 };
 
 // Basic ECS AI agent system
@@ -14,13 +14,14 @@ pub struct Sys;
 impl<'a> System<'a> for Sys {
     type SystemData = (
         Entities<'a>,
+        Read<'a, Time>,
         Read<'a, DeltaTime>,
         WriteStorage<'a, Actions>,
         ReadStorage<'a, Pos>,
         WriteStorage<'a, Stats>,
     );
 
-    fn run(&mut self, (entities, dt, mut actions, positions, mut stats): Self::SystemData) {
+    fn run(&mut self, (entities, time, dt, mut actions, positions, mut stats): Self::SystemData) {
         for (a, mut actions_a, pos_a) in (&entities, &mut actions, &positions).join() {
             for event in actions_a.0.drain(..) {
                 match event {
@@ -30,7 +31,7 @@ impl<'a> System<'a> for Sys {
                                 continue;
                             }
                             if pos_a.0.distance_squared(pos_b.0) < 50.0 {
-                                &mut stat_b.hp.change_by(-60, 0.0); // TODO: variable damage and current time
+                                &mut stat_b.hp.change_by(-60, *time); // TODO: variable damage
                                 &stat_b.hp;
                             }
                         }