The last ability of The Endstone does not work.

The last effect of The Endstone does not work correctly; your life total does not change at the end of the turn, even though it is supposed to become half of your life total.

Start by locating the Java definition or implementation for The Endstone and reproduce the issue in an end-of-turn game state. Trace the final ability's life-total handling and verify that the life total becomes half its current value at the end of the turn, adding or updating a relevant test if the project has one.

Written by the indexing model from the issue text.