Tomb Kings 
racial faction flavour image.
Grateful Paragons is an exclusive random event 
for the Tomb Kings factions introduced in Total War: Warhammer II which provides a moderate temporary
reduction to the hero 
action cost for all heroes factionwide.
As the event category implies, it can be triggered at any time but only once during a campaign game.
In-game description[ | ]
The example you set is inspirational. The Heroes under your command are proud to carry out your will, and do so eagerly. The cost for all Hero actions has fallen.
Effects[ | ]
- Grateful Paragons
- Hero action cost : -20% for all actions (all characters)
- Hero action cost
Duration[ | ]
- Turns remaining: 5