Royal Council

When a Royal Council takes place, a choice of one of three royal decrees will be given. Royal decrees are permanent bonuses that last for the rest of the run. Most royal decrees can appear multiple times and if picked multiple times the effects will stack.

There are 15 common royal decrees and 5 specific to each king. At least one of the choices offered each time will always be one specific to the king but reroll choices are random.

Royal Council events occur 4 times during a run, on years 4, 14, 21, and 29. If the run continues after victory, Royal Councils occur on year 37 and every 11 years subsequently. Additional Royal Council events can be triggered by the Razing special card.

Common royal decrees

The following royal decrees are available to all kings and are all that the King of Nothing has access to.

Royal Decree	Effect
Bunker	Increases the attack speed of your towers by 50%.
Exploration	Unlocks 3 new random plots.
Eyeglass	All your units and towers have +20% chance to deal critical damage.
Feast	Doubles the maximum HP of all currently active troops. (Last time I checked it doubled the HP of all current and future troops, not just currently active troops.)
Gambling	Receive two cards after every battle. You can no longer choose your loot.
Gunpowder	Increases the damaging range of area attacks by 30%.
Iron Fist	Doubles critical damage.
Leatherworks	Doubles the movement speed of all your units.
Loan	Receive 99 gold coins.
Outsourcing	Receive 9 free re-rolls.
Overwork	Your buildings apply their effects one more time.
Poison Thorns	Every time enemies attack your units, those enemies gain 1 poison stack.
Sharp Blades	Increases the attack of all your units and towers by 30%.
Venom	Every poison effect is now applied twice.
War Horns	Summoned units are 50% stronger.

King of Blood royal decrees

The following royal decrees are only available to the King of Blood.

Royal Decree	Effect
Covenant	Doubles the stats of all active Demon's Altars
Embalming	Enemies killed have a 10% chance to be summoned back to life as allies.
Evil Pact	Doubles the maximum quantity of imps summoned per battle.
Fireworks	Bombers have their attack range area doubled.
Transmutation	All active allied troops are replaced with level 3 Imps.

King of Greed royal decrees

The following royal decrees are only available to the King of Greed.

Royal Decree	Effect
Bargain	Merchant's cards cost half the price.
Burglary	All active troops gain 2 stacks of Midas Touch.
Insurance	Receive 1 gold for every 9 allied unit deaths.
Salvage	Cards thrown into the pit return 3x more gold.
Scimitars	Thief attacks are always critical strikes.

King of Nature royal decrees

The following royal decrees are only available to the King of Nature.

Royal Decree	Effect
Fertility	Receive 3 Procreate cards immediately.
Nettle	Your Treant attack now deals damage to enemies.
Populate	Whenever any unit is added to any plot, add one extra unit.
Revitalize	Doubles every heal effect.
Wilderness	Unlocks 3 new random plots, with Forests on each of them.

King of Progress royal decrees

The following royal decrees are only available to the King of Progress.

Royal Decree	Effect
Frankensteinian	Converter towers now summon Bombers instead of Lab Rats.
Gentrify	All currently active plots gain one level.
Scopes	Adds 9 Precision cards to your hand.
Splicing	The level of all active Lab Rats is doubled.
Ultragravity	Doubles the attack range of your Mothership.

King of Spells royal decrees

The following royal decrees are only available to the King of Spells.

Royal Decree	Effect
Abracadabra	10% of all enemies turn into frogs.
Glass Staffs	Your Wizards now have 100 attack points but only 1 HP.
Re-enchant	Doubles all enchantments of all your active troops.
Spiremania	Doubles the amount of healing rays of your Spires.
Static Fields	Doubles the attack speed of your Citadel's lightning bolts.

King of Stone royal decrees

The following royal decrees are only available to the King of Stone.

Royal Decree	Effect
Barricade	Walls reflect 10% of damage taken.
Dynamites	Traps now cause double damage.
Engineering	Doubles the damage of all towers.
Towerdome	Stronghold can now build towers twice as fast.