Step 1: 🌬️ Wind and 🔥 Fire

Combine 🌬️ Wind and 🔥 Fire to create 💨 Smoke

Step 2: 💧 Water and 💧 Water

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

Step 3: 💧 Water and 🌬️ Wind

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

Step 4: 💧 Water and 🔥 Fire

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

Step 5: 💧 Water and 🌍 Earth

And then, combine 💧 Water and 🌍 Earth to create 🌱 Plant

Step 6: 💨 Smoke and 🌊 Wave

As next step, combine 💨 Smoke and 🌊 Wave to create 🏄 Surf

Step 7: 🌱 Plant and 💧 Water

Combine 🌱 Plant and 💧 Water to create 🐊 Swamp

Step 8: 🌱 Plant and 🌊 Lake

Combine 🌱 Plant and 🌊 Lake to create 🌸 Lily

Step 9: 🌍 Earth and 🌍 Earth

Combine 🌍 Earth and 🌍 Earth to create 🏔️ Mountain

Step 10: 🌊 Wave and 🌱 Plant

Combine 🌊 Wave and 🌱 Plant to create 🌊 Seaweed

Step 11: 💨 Steam and 🔥 Fire

Combine 💨 Steam and 🔥 Fire to create 🚗 Engine

Step 12: 🏄 Surf and 🌱 Plant

Combine 🏄 Surf and 🌱 Plant to create 🏄 Surfboard

Step 13: 🌸 Lily and 🐊 Swamp

Combine 🌸 Lily and 🐊 Swamp to create 🌺 Lotus

Step 14: 🚗 Engine and 🏔️ Mountain

Combine 🚗 Engine and 🏔️ Mountain to create 🚂 Train

Step 15: 🚗 Engine and 🌊 Seaweed

Combine 🚗 Engine and 🌊 Seaweed to create 🚤 Submarine

Step 16: 🌺 Lotus and 🏄 Surfboard

Combine 🌺 Lotus and 🏄 Surfboard to create 🧘‍♀️ Yoga

Step 17: 🚤 Submarine and 🚂 Train

Combine 🚤 Submarine and 🚂 Train to create 🚇 Subway

Step 18: 🚇 Subway and 🧘‍♀️ Yoga

Combine 🚇 Subway and 🧘‍♀️ Yoga to create 🚇 Subwayoga