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