Boss Rift is a simple mod that has been made as an addon for any adventure mod that features long journeys with boss fights.

After killing a boss, a rift core will appear at it's location, allowing you to either right click it to activate it, or if it's too far away — toss an ender pearl at it. If the rift has been activated, it will take a few seconds to get ready, after which it will transport any entity in the area back to the home of the player that activated it.

The mod comes with a server-config file, allowing you to set how long the rift takes to disappear, or never to disappear at all.

After 1.19.2, this mod uses the Forge boss entity tag, so as long as a mod tags a boss of theirs correctly, this mod supports it

In versions 1.19.1 and lower, the mod currently has support for:

(these bosses are in the "rift_bosses" tag)

-All Twilight Forest bosses
-All Atum2 pharaohs
-All Mowzie's Mobs bosses
-All of Advent Of Ascension (Nevermine) bosses that you can't summon anywhere you want
-Gaia Dimension's boss
-All Blue Skies bosses
-All Stalwart Dungeons bosses
-All Dungeons Mod bosses
-All Astemir's Forestcraft bosses

If I'm missing any bosses that fit the criteria (there is no point of adding a boss that you can summon in your backyard, such as the vanilla's Wither), you can comment, msg me on discord (jodlodi) or you can add the bosses into the tag yourself by using a datapack.