Step 1: 💧 Water and 🌍 Earth

Combine 💧 Water and 🌍 Earth to create 🌱 Plant

Step 2: 💧 Water and 🔥 Fire

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

Step 3: 💧 Water and 💧 Water

Then, combine 💧 Water and 💧 Water to create 🌊 Lake

Step 4: 🌍 Earth and 🌍 Earth

Now, combine 🌍 Earth and 🌍 Earth to create 🏔️ Mountain

Step 5: 🌍 Earth and 🔥 Fire

And then, combine 🌍 Earth and 🔥 Fire to create 🌋 Lava

Step 6: 🌍 Earth and 🌬️ Wind

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

Step 7: 🌱 Plant and 🌬️ Wind

Combine 🌱 Plant and 🌬️ Wind to create 🌼 Dandelion

Step 8: 💨 Steam and 🔥 Fire

Combine 💨 Steam and 🔥 Fire to create 🚗 Engine

Step 9: 🏔️ Mountain and 🌊 Lake

Combine 🏔️ Mountain and 🌊 Lake to create 🏞️ Fjord

Step 10: 🌋 Lava and 🌍 Earth

Combine 🌋 Lava and 🌍 Earth to create 🪨 Stone

Step 11: 🌫️ Dust and 🌍 Earth

Combine 🌫️ Dust and 🌍 Earth to create 🪐 Planet

Step 12: 🚗 Engine and 🌼 Dandelion

Combine 🚗 Engine and 🌼 Dandelion to create 🚁 Helicopter

Step 13: 🪨 Stone and 🏞️ Fjord

Combine 🪨 Stone and 🏞️ Fjord to create 👹 Troll

Step 14: 🔥 Fire and 🔥 Fire

Combine 🔥 Fire and 🔥 Fire to create 🌋 Volcano

Step 15: 🪐 Planet and 🪐 Planet

Combine 🪐 Planet and 🪐 Planet to create ⭐️ Star

Step 16: 👹 Troll and 🚁 Helicopter

Combine 👹 Troll and 🚁 Helicopter to create 🚁 Trollcopter

Step 17: ⭐️ Star and 🌋 Volcano

Combine ⭐️ Star and 🌋 Volcano to create 🌠 Supernova

Step 18: 🌠 Supernova and 🚁 Trollcopter

Combine 🌠 Supernova and 🚁 Trollcopter to create 👾 Trollnova