Step 1: 💧 Water and 🌍 Earth

Combine 💧 Water and 🌍 Earth to create 🌱 Plant

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: 🌊 Wave and 🌊 Lake

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

Step 6: 🌱 Plant and 🌱 Plant

As next step, combine 🌱 Plant and 🌱 Plant to create 🌳 Tree

Step 7: 💨 Smoke and 🌊 Lake

Combine 💨 Smoke and 🌊 Lake to create 🌫️ Fog

Step 8: 💨 Steam and 🔥 Fire

Combine 💨 Steam and 🔥 Fire to create 🚗 Engine

Step 9: 🌬️ Wind and 🔥 Fire

Combine 🌬️ Wind and 🔥 Fire to create 💨 Smoke

Step 10: 💨 Smoke and 🌊 Wave

Combine 💨 Smoke and 🌊 Wave to create 🏄 Surf

Step 11: 🌊 Tsunami and 💨 Steam

Combine 🌊 Tsunami and 💨 Steam to create 🚢 Titanic

Step 12: 🌫️ Fog and 🌳 Tree

Combine 🌫️ Fog and 🌳 Tree to create 👻 Ghost

Step 13: 🚗 Engine and 🚗 Engine

Combine 🚗 Engine and 🚗 Engine to create 🚀 Rocket

Step 14: 🏄 Surf and 💨 Smoke

Combine 🏄 Surf and 💨 Smoke to create 🏄 Surfer

Step 15: 👻 Ghost and 🚢 Titanic

Combine 👻 Ghost and 🚢 Titanic to create 🃏 Jack

Step 16: 🏄 Surfer and 🚀 Rocket

Combine 🏄 Surfer and 🚀 Rocket to create 🤖 Iron Man

Step 17: 🤖 Iron Man and 🃏 Jack

Combine 🤖 Iron Man and 🃏 Jack to create 🍺 Iron Jack