If Goblin dies set Goblin_Died to true > Run rand
Function rand
If rand = 1-10 > Function Loot_Common
If rand = 11-15 > Function Loot_Rare
If rand = 16-17 > Function Loot_VeryRare
If rand = 18 > Function Loot_ UltraRare
Function Loot_Common
If Goblin_Died OR
If Orc_Died > Spawn Gold
If ???
Function Loot_Rare
If Goblin_Died > Spawn Gold
If Orc_Died > Spawn Sword
If ???
Function Loot_VeryRare
If Goblin_Died > Spawn Dagger
If Orc_Died > Spawn Armor
If ???
lots of ways..