Step 1: 💧 Water and 🌬️ Wind

Combine 💧 Water and 🌬️ Wind to create 🌊 Wave

Step 2: 🌬️ Wind and 🔥 Fire

Next, combine 🌬️ Wind and 🔥 Fire to create 💨 Smoke

Step 3: 🌍 Earth and 🌍 Earth

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

Step 4: 💧 Water and 🌍 Earth

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

Step 5: 🌍 Earth and 🌬️ Wind

And then, combine 🌍 Earth and 🌬️ Wind to create 🌫️ Dust

Step 6: 🔥 Fire and 🔥 Fire

As next step, combine 🔥 Fire and 🔥 Fire to create 🌋 Volcano

Step 7: 🌍 Earth and 🔥 Fire

Combine 🌍 Earth and 🔥 Fire to create 🌋 Lava

Step 8: 💧 Water and 🔥 Fire

Combine 💧 Water and 🔥 Fire to create 💨 Steam

Step 9: 💨 Smoke and 🌊 Wave

Combine 💨 Smoke and 🌊 Wave to create 🏄 Surf

Step 10: 💨 Steam and 🔥 Fire

Combine 💨 Steam and 🔥 Fire to create 🚗 Engine

Step 11: 🏔️ Mountain and 🌬️ Wind

Combine 🏔️ Mountain and 🌬️ Wind to create 🌨️ Avalanche

Step 12: 🌱 Plant and 🌱 Plant

Combine 🌱 Plant and 🌱 Plant to create 🌳 Tree

Step 13: 🌋 Volcano and 🌫️ Dust

Combine 🌋 Volcano and 🌫️ Dust to create 🌋 Ash

Step 14: 🌋 Lava and 🌍 Earth

Combine 🌋 Lava and 🌍 Earth to create 🪨 Stone

Step 15: 🏄 Surf and 💨 Steam

Combine 🏄 Surf and 💨 Steam to create 🏄 Surfing

Step 16: 🌨️ Avalanche and 🚗 Engine

Combine 🌨️ Avalanche and 🚗 Engine to create 🏂 Snowmobile

Step 17: 🌋 Ash and 🌳 Tree

Combine 🌋 Ash and 🌳 Tree to create ✏️ Pencil

Step 18: 🏄 Surfing and 🪨 Stone

Combine 🏄 Surfing and 🪨 Stone to create 🛥️ Skimming

Step 19: ✏️ Pencil and 🏂 Snowmobile

Combine ✏️ Pencil and 🏂 Snowmobile to create 🛷 Sled

Step 20: 🛷 Sled and 🛥️ Skimming

Combine 🛷 Sled and 🛥️ Skimming to create 🛷 Skimobile