Step 1: 💧 Water and 🌬️ Wind

Combine 💧 Water and 🌬️ Wind to create 🌊 Wave

Step 2: 🌍 Earth and 🌬️ Wind

Next, combine 🌍 Earth and 🌬️ Wind to create 🌫️ Dust

Step 3: 💧 Water and 🌍 Earth

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

Step 4: 🌊 Wave and 🌱 Plant

Now, combine 🌊 Wave and 🌱 Plant to create 🌊 Seaweed

Step 5: 💨 Steam and 🔥 Fire

And then, combine 💨 Steam and 🔥 Fire to create 🚗 Engine

Step 6: 💧 Water and 🔥 Fire

As next step, combine 💧 Water and 🔥 Fire to create 💨 Steam

Step 7: 🌫️ Dust and 🌍 Earth

Combine 🌫️ Dust and 🌍 Earth to create 🪐 Planet

Step 8: 🌱 Plant and 🌱 Plant

Combine 🌱 Plant and 🌱 Plant to create 🌳 Tree

Step 9: 🚗 Engine and 🌊 Seaweed

Combine 🚗 Engine and 🌊 Seaweed to create 🚤 Submarine

Step 10: 🚗 Engine and 🚗 Engine

Combine 🚗 Engine and 🚗 Engine to create 🚀 Rocket

Step 11: 🪐 Planet and 💨 Steam

Combine 🪐 Planet and 💨 Steam to create 🕯️ Steampunk

Step 12: 🚤 Submarine and 🌳 Tree

Combine 🚤 Submarine and 🌳 Tree to create 🚢 Wooden Submarine

Step 13: 🕯️ Steampunk and 🚀 Rocket

Combine 🕯️ Steampunk and 🚀 Rocket to create 🚀 Steam Rocket

Step 14: 🚀 Steam Rocket and 🚢 Wooden Submarine

Combine 🚀 Steam Rocket and 🚢 Wooden Submarine to create 🚢 Steam Submarine