Step 1: 💧 Water and 💧 Water

Combine 💧 Water and 💧 Water to create 🌊 Lake

Step 2: 🌍 Earth and 🔥 Fire

Next, combine 🌍 Earth and 🔥 Fire to create 🌋 Lava

Step 3: 💧 Water and 🔥 Fire

Then, combine 💧 Water and 🔥 Fire to create 💨 Steam

Step 4: 💧 Water and 🌍 Earth

Now, combine 💧 Water and 🌍 Earth to create 🌱 Plant

Step 5: 🔥 Fire and 🔥 Fire

And then, combine 🔥 Fire and 🔥 Fire to create 🌋 Volcano

Step 6: 🌍 Earth and 🌬️ Wind

As next step, combine 🌍 Earth and 🌬️ Wind to create 🌫️ Dust

Step 7: 🌱 Plant and 🌊 Lake

Combine 🌱 Plant and 🌊 Lake to create 🌸 Lily

Step 8: 🌋 Lava and 🌍 Earth

Combine 🌋 Lava and 🌍 Earth to create 🪨 Stone

Step 9: 💨 Steam and 🔥 Fire

Combine 💨 Steam and 🔥 Fire to create 🚗 Engine

Step 10: 🌱 Plant and 🌱 Plant

Combine 🌱 Plant and 🌱 Plant to create 🌳 Tree

Step 11: 🌋 Volcano and 🌫️ Dust

Combine 🌋 Volcano and 🌫️ Dust to create 🌋 Ash

Step 12: 🌫️ Dust and 💧 Water

Combine 🌫️ Dust and 💧 Water to create 💩 Mud

Step 13: 🪨 Stone and 🌸 Lily

Combine 🪨 Stone and 🌸 Lily to create ♀️ Venus

Step 14: 🚗 Engine and 🚗 Engine

Combine 🚗 Engine and 🚗 Engine to create 🚀 Rocket

Step 15: 🌋 Ash and 🌳 Tree

Combine 🌋 Ash and 🌳 Tree to create ✏️ Pencil

Step 16: ♀️ Venus and 💩 Mud

Combine ♀️ Venus and 💩 Mud to create 👨 Adam

Step 17: ✏️ Pencil and 🚀 Rocket

Combine ✏️ Pencil and 🚀 Rocket to create 💣 Missile

Step 18: 💣 Missile and 👨 Adam

Combine 💣 Missile and 👨 Adam to create ⚛️ Atom