A 8 hour speedup for healing is an item in Evony TKR (The King's Return).
The description of 8 Hour Speedup for Healing in Evony TKR says:
Reduces remaining time on a troops healing timer by 8 hours.
8 Hour Speedup for Healing is known to potentially be obtainable from opening Mass of Speedup. The links for each item are below:
Note: This list may be incomplete.