diff --git a/day22/day.go b/day22/day.go
new file mode 100644
index 0000000..58c248d
--- /dev/null
+++ b/day22/day.go
@@ -0,0 +1,88 @@
+package day22
+
+import (
+	"strconv"
+	"strings"
+	"tools"
+)
+
+type Effect struct {
+	damage int
+	armor  int
+	mana   int
+	timer  int
+}
+
+func (e Effect) copy() Effect {
+	return Effect{e.damage, e.armor, e.mana, e.timer}
+}
+
+type Spell struct {
+	cost        int
+	damage      int
+	heal        int
+	applyEffect Effect
+}
+
+type Entity struct {
+	hitpoints      int
+	mana           int
+	damage         int
+	armor          int
+	currentEffects map[string]Effect
+}
+
+func (e Entity) copy() Entity {
+	return Entity{e.hitpoints, e.mana, e.damage, e.armor, e.currentEffects}
+}
+
+var spells = map[string]Spell{
+	"Magic Missile": {53, 4, 0, nil},
+	"Drain":         {73, 2, 2, nil},
+	"Shield":        {113, 0, 0, Effect{0, 7, 0, 6}},
+	"Poison":        {173, 0, 0, Effect{3, 0, 0, 6}},
+	"Recharge":      {229, 0, 0, Effect{0, 0, 101, 5}},
+}
+
+func applyEffects(player, boss Entity) {
+	for eName, eData := range player.currentEffects {
+		switch eName {
+		case "Shield":
+			if eData.timer == spells["Shield"].applyEffect.timer {
+				player.armor += eData.armor
+			} else if eData.timer == 1 {
+				player.armor -= eData.armor
+			}
+		case "Recharge":
+			player.mana += eData.mana
+		}
+		eData.timer--
+	}
+	for eName, eData := range boss.currentEffects {
+		switch eName {
+		case "Poison":
+			boss.hitpoints -= eData.damage
+		}
+		eData.timer--
+	}
+}
+
+func Part1(puzzle tools.AoCPuzzle) interface{} {
+	player := Entity{50, 500, 0, 0, make(map[string]Effect)}
+	boss := Entity{0, 0, 0, 0, make(map[string]Effect)}
+	bossdata := puzzle.GetInputArray()
+	for _, line := range bossdata {
+		parts := strings.Split(line, ": ")
+		switch parts[0] {
+		case "Hit Points":
+			boss.hitpoints, _ = strconv.Atoi(parts[1])
+		case "Damage":
+			boss.damage, _ = strconv.Atoi(parts[0])
+		}
+	}
+	return 0
+}
+
+func Part2(puzzle tools.AoCPuzzle) interface{} {
+	return 0
+}
diff --git a/main.go b/main.go
index 08e5ae4..28cd575 100644
--- a/main.go
+++ b/main.go
@@ -22,6 +22,7 @@ import (
 	"aoc2015/day19"
 	"aoc2015/day20"
 	"aoc2015/day21"
+	"aoc2015/day22"
 	"flag"
 	"fmt"
 	"os"
@@ -60,6 +61,7 @@ func initDayFunctions() {
 		19: {1: day19.Part1, 2: day19.Part2},
 		20: {1: day20.Part1, 2: day20.Part2},
 		21: {1: day21.Part1, 2: day21.Part2},
+		22: {1: day22.Part1, 2: day22.Part2},
 	}
 }