Acquiring the Landscape Cards in Loop Hero will help you to progress in the game and one of the most important ones you can obtain is the River Landscape Card which will pave the way for many different types of enemies to be spawned on the map. This How to Get the River Landscape Card guide will tell you how to acquire it.
Obtaining the River Landscape Card is not an easy endeavor as it requires placing 4 buildings in sequence at your base first. To begin with you will need to build either a Herbalist's Hut which requires x2 Stable Wood, x3 Preserved Rock, and Food Supply. Or alternately the Field Kitchen which requires x3 Stable Wood, x2 Preserved Rock, and Food Supply. After you have one of these two buildings you will be able to construct the Gymnasium which will require x5 Stable Wood, x3 Preserved Rock, x6 Stable Metal, and Metamorphosis.
The next building you need to construct is the Supply Depot which requires x9 Stable Wood, x17 Stable Metal, x3 Food Supply, and Metamorphosis. And the final building is the Intel Center which requires x12 Stable Wood, x15 Stable Metal, x3 Food Supply, and Metamorphosis. Once all these buildings are in place at your base you will be able to start collecting the River Landscape Cards. The River Landscape Card itself will require x4 Orbs of Unity, x2 Metamorphosis, and x15 Orbs of Expansion. Check out our How to Farm Resources
guide to find out what the best way is to gather the required resources. Once you have met the aforementioned requirements you will be able to create your very own River.
Placing the River Landscape Card in a desert will allow you to slow down the attack speed of all units on the tile. If it is placed near a battlefield it will create a shipwreck that can generate chests, and if it is placed near Reeds, Fishman will appear in the loop. The main benefit of the River Landscape Card though is that it can duplicate the effect of any card placed next to them.