diff --git a/entity/player.go b/entity/player.go
index 5a71cf4..575935d 100644
--- a/entity/player.go
+++ b/entity/player.go
@@ -35,6 +35,7 @@ type Player struct {
 	Relics      []Relic
 	Dead        bool
 	Fled        bool
+	SkillUses   int // remaining skill uses this combat
 }
 
 func NewPlayer(name string, class Class) *Player {
diff --git a/game/event.go b/game/event.go
index 40d7abe..01b64df 100644
--- a/game/event.go
+++ b/game/event.go
@@ -92,6 +92,11 @@ func (s *GameSession) spawnMonsters() {
 		}
 		s.state.Monsters[i] = m
 	}
+
+	// Reset skill uses for all players at combat start
+	for _, p := range s.state.Players {
+		p.SkillUses = 3
+	}
 }
 
 func (s *GameSession) spawnBoss() {
@@ -115,11 +120,20 @@ func (s *GameSession) spawnBoss() {
 		boss.DEF = boss.DEF / 2
 	}
 	s.state.Monsters = []*entity.Monster{boss}
+
+	// Reset skill uses for all players at combat start
+	for _, p := range s.state.Players {
+		p.SkillUses = 3
+	}
 }
 
 func (s *GameSession) grantTreasure() {
 	floor := s.state.FloorNum
 	for _, p := range s.state.Players {
+		if len(p.Inventory) >= 10 {
+			s.addLog(fmt.Sprintf("%s's inventory is full!", p.Name))
+			continue
+		}
 		if rand.Float64() < 0.5 {
 			bonus := 3 + rand.Intn(6) + floor/3
 			item := entity.Item{
@@ -190,11 +204,13 @@ func (s *GameSession) triggerEvent() {
 			continue
 		}
 		if rand.Float64() < 0.5 {
-			dmg := 10 + rand.Intn(11)
+			baseDmg := 10 + s.state.FloorNum
+			dmg := baseDmg + rand.Intn(baseDmg/2+1)
 			p.TakeDamage(dmg)
 			s.addLog(fmt.Sprintf("Trap! %s takes %d damage", p.Name, dmg))
 		} else {
-			heal := 15 + rand.Intn(11)
+			baseHeal := 15 + s.state.FloorNum
+			heal := baseHeal + rand.Intn(baseHeal/2+1)
 			before := p.HP
 			p.Heal(heal)
 			s.addLog(fmt.Sprintf("Blessing! %s heals %d HP", p.Name, p.HP-before))
diff --git a/game/session.go b/game/session.go
index 049ee22..ef57e54 100644
--- a/game/session.go
+++ b/game/session.go
@@ -282,6 +282,9 @@ func (s *GameSession) BuyItem(playerID string, itemIdx int) bool {
 	item := s.state.ShopItems[itemIdx]
 	for _, p := range s.state.Players {
 		if p.Fingerprint == playerID && p.Gold >= item.Price {
+			if len(p.Inventory) >= 10 {
+				return false
+			}
 			p.Gold -= item.Price
 			p.Inventory = append(p.Inventory, item)
 			return true
diff --git a/game/turn.go b/game/turn.go
index 485e4d5..f9273d7 100644
--- a/game/turn.go
+++ b/game/turn.go
@@ -97,6 +97,11 @@ func (s *GameSession) resolvePlayerActions() {
 			})
 			intentOwners = append(intentOwners, p.Name)
 		case ActionSkill:
+			if p.SkillUses <= 0 {
+				s.addLog(fmt.Sprintf("%s has no skill uses left!", p.Name))
+				break
+			}
+			p.SkillUses--
 			switch p.Class {
 			case entity.ClassWarrior:
 				for _, m := range s.state.Monsters {
diff --git a/ui/game_view.go b/ui/game_view.go
index 3c20b65..9123a35 100644
--- a/ui/game_view.go
+++ b/ui/game_view.go
@@ -124,6 +124,7 @@ func renderHUD(state game.GameState, targetCursor int, moveCursor int) string {
 				case entity.ClassRogue:
 					skillDesc = "Skill: Scout — reveal neighboring rooms"
 				}
+				skillDesc += fmt.Sprintf(" (%d uses left)", p.SkillUses)
 				sb.WriteString(styleSystem.Render(skillDesc))
 				sb.WriteString("\n")
 				break