Triggers 5 seconds after battle begins, forming [Life Link] with the 3 most injured ground allied heroes across the battlefield (re-selected every 5 seconds). When self's HP first drops below 50%, transform into [Earth Spirit], guarding the allied ground hero with the highest physical attack. That hero gains self's 40(100)% max HP, immunity to control effects for 8(20) seconds, and if dealt lethal damage during this period, enters invincibility for 3 seconds and ends the guard effect early. [Life Link]: Increases damage reduction by 20(50)%, grants 40(100)% of Houtu's magic attack as healing per second, and redirects 50% of damage taken to Houtu. Cannot be dispelled. [Earth Spirit]: Cannot be targeted by either side and is immune to damage while active.