Echo Gates is a mod that brings a fast travel waypoint system to Minecraft using materials found in the Deep Dark. Find portal frames in Ancient Cities, then activate them with a new item: the Sculk Heart.
Features
Activating Echo Gates
Crafting Sculk Hearts
Craft a Sculk Heart by combining an Echo Shard, an Ender Pearl, and any Raw Meat (or Rotten Flesh).

Activating Echo Gates
Use a Sculk Heart on a dormant Ancient City Portal to activate it and create an Echo Gate.

Custom Portal Frames
Echo Gates can be created from any rectangular Reinforced Deepslate frame (similar to Nether portals). Since Reinforced Deepslate isn't obtainable in vanilla survival, this method of portal creation is intended for modpacks that provide ways to acquire or craft it.
Using Echo Gates
By default, stepping through an Echo Gate teleports you to a random active Echo Gate in the world.
Linking Gates with Echo Shards
You can create connections from one Echo Gate to another using Echo Shards:

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Right-click an Echo Gate with an Echo Shard to store its location
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Right-click a different Echo Gate with the stored shard to link them together
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The linked gate will now always teleport to the stored destination instead of a random gate
Unlinking Gates
Right-click a linked Echo Gate with a Fermented Spider Eye to remove its connection and return it to random teleportation.
