Blade is sharp and it is very useful for many weapons, the element Blade is used in many combinations for Axe, Blender, Blood, Helicopter, Katana, Leather, Scalpel, Scissors, Sword, and more. The process of making Blade is complicated in Little Alchemy 2, the good news is that we have figured out all the 4 methods, from simplest to hardest. In all these methods, you have to make Life and Metal first. Check out the below instructions and try them yourself.
Fire + Earth = Lava
Lava + Earth = Volcano
Water + Water = Puddle
Water + Puddle = Pond
Water + Pond = Lake
Lake + Lake = Sea
Earth + Sea = Primordial Soup
Volcano + Primordial Soup = Life
Earth + Water = Mud
Air + Air = Pressure
Earth + Pressure = Stone
Air + Stone = Sand
Sand + Mud = Clay
Clay + Life = Human
Human + Stone = Tool
Tool + Stone = Hammer
Hammer + Earth = Ore
Ore + Fire = Metal
Method 1: Metal + Stone
Metal + Stone = Blade
Method 2: Rock + Metal
Small + Earth = Pebble
Pebble + Pebble = Rock
Rock + Metal = Blade
Method 3: Steel + Stone
Time + Life = Death
Death + Life = Organic Matter
Organic Matter + Stone = Mineral
Metal + Mineral = Steel
Steel + Stone = Blade
Method 4: Rock + Steel
Small + Earth = Pebble
Pebble + Pebble = Rock
Time + Life = Death
Death + Life = Organic Matter
Organic Matter + Stone = Mineral
Metal + Mineral = Steel
Rock + Steel = Blade