Step 1: 💧 Water and 💧 Water

Combine 💧 Water and 💧 Water to create 🌊 Lake

Step 2: 💧 Water and 🌬️ Wind

Next, combine 💧 Water and 🌬️ Wind to create 🌊 Wave

Step 3: 🔥 Fire and 🔥 Fire

Then, combine 🔥 Fire and 🔥 Fire to create 🌋 Volcano

Step 4: 🌍 Earth and 🌬️ Wind

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

Step 5: 🌊 Wave and 🌊 Lake

And then, combine 🌊 Wave and 🌊 Lake to create 🌊 Tsunami

Step 6: 🌋 Volcano and 🌫️ Dust

As next step, combine 🌋 Volcano and 🌫️ Dust to create 🌋 Ash

Step 7: 🌫️ Dust and 🌱 Plant

Combine 🌫️ Dust and 🌱 Plant to create 🌱 Pollen

Step 8: 💧 Water and 🌍 Earth

Combine 💧 Water and 🌍 Earth to create 🌱 Plant

Step 9: 💧 Water and 🔥 Fire

Combine 💧 Water and 🔥 Fire to create 💨 Steam

Step 10: 🌫️ Dust and 🌍 Earth

Combine 🌫️ Dust and 🌍 Earth to create 🪐 Planet

Step 11: 🌊 Tsunami and 💨 Steam

Combine 🌊 Tsunami and 💨 Steam to create 🚢 Titanic

Step 12: 🌱 Pollen and 🌋 Ash

Combine 🌱 Pollen and 🌋 Ash to create 🤧 Cough

Step 13: 🌱 Plant and 🌱 Plant

Combine 🌱 Plant and 🌱 Plant to create 🌳 Tree

Step 14: 🪐 Planet and 💨 Steam

Combine 🪐 Planet and 💨 Steam to create 🕯️ Steampunk

Step 15: 🤧 Cough and 🚢 Titanic

Combine 🤧 Cough and 🚢 Titanic to create 🌊 Sinking

Step 16: 🕯️ Steampunk and 🌳 Tree

Combine 🕯️ Steampunk and 🌳 Tree to create 🌳 Steam Tree

Step 17: 🌳 Steam Tree and 🌊 Sinking

Combine 🌳 Steam Tree and 🌊 Sinking to create 🌳🌊 Sinking Tree