Step 1: 💧 Water and 🌬️ Wind

Combine 💧 Water and 🌬️ Wind to create 🌊 Wave

Step 2: 💧 Water and 💧 Water

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

Step 3: 🌍 Earth and 🌬️ Wind

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

Step 4: 🔥 Fire and 🔥 Fire

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

Step 5: 🌱 Plant and 💧 Water

And then, combine 🌱 Plant and 💧 Water to create 🐊 Swamp

Step 6: 🌱 Plant and 🌬️ Wind

As next step, combine 🌱 Plant and 🌬️ Wind to create 🌼 Dandelion

Step 7: 💧 Water and 🌍 Earth

Combine 💧 Water and 🌍 Earth to create 🌱 Plant

Step 8: 💧 Water and 🔥 Fire

Combine 💧 Water and 🔥 Fire to create 💨 Steam

Step 9: 🌊 Wave and 🌊 Lake

Combine 🌊 Wave and 🌊 Lake to create 🌊 Tsunami

Step 10: 🌊 Lake and 🌊 Lake

Combine 🌊 Lake and 🌊 Lake to create 🌊 Ocean

Step 11: 🌋 Volcano and 🌫️ Dust

Combine 🌋 Volcano and 🌫️ Dust to create 🌋 Ash

Step 12: 🌼 Dandelion and 🐊 Swamp

Combine 🌼 Dandelion and 🐊 Swamp to create 🐸 Frog

Step 13: 🌋 Ash and 🌱 Plant

Combine 🌋 Ash and 🌱 Plant to create 🚬 Tobacco

Step 14: 🌊 Tsunami and 💨 Steam

Combine 🌊 Tsunami and 💨 Steam to create 🚢 Titanic

Step 15: 🌋 Ash and 🌊 Ocean

Combine 🌋 Ash and 🌊 Ocean to create 🧂 Salt

Step 16: 🚬 Tobacco and 🐸 Frog

Combine 🚬 Tobacco and 🐸 Frog to create 🚬 Smoking

Step 17: 🧂 Salt and 🚢 Titanic

Combine 🧂 Salt and 🚢 Titanic to create 🚿 Sink

Step 18: 🚿 Sink and 🚬 Smoking

Combine 🚿 Sink and 🚬 Smoking to create 🚬 Ashtray