The following royal decrees are available to all kings.
| Royal Decree | Effect |
|---|---|
| Increases the attack speed of your towers by 50%. | |
| All troops in the field now have the same damage as your highest damage troop. | |
| Unlocks 3 new random plots. | |
| All your plots get +20% raw chance to deal critical damage. | |
| Doubles the maximum HP of all troops. | |
| Increases the damaging range of area attacks by 30%. | |
| Doubles critical damage. | |
| Doubles the movement speed of all your units. | |
| Receive 99 gold coins. | |
| Receive 9 free re-rolls. | |
| Your support buildings apply their effects one more time. | |
| Every time enemies attack your units, those enemies gain 1 poison stack. | |
| Regains all your lost lives. | |
| Increases the attack of all your units and towers by 30%. | |
| Discard your current hand. Gain one copy of each of your king's cards. | |
| Every poison effect is now applied twice. | |
| Summons are 50% stronger. | |
| Frozen, stunned, or poisoned units take +50% damage. |


