Diadem

Diadem
Info
Cost
Type(s)	Treasure - Prize
Kingdom card?	No
Set	Cornucopia
Illustrator(s)	Ryan Laukat
Card text
+ per unused Action you have (Action, not Action card). (This is not in the Supply.)

Diadem is a Treasure-Prize card from Cornucopia. It is not in the Supply, and can only be gained by playing a Tournament.

FAQ

Official FAQ

• When you play Diadem, you get an extra + per unused Action you have. This means Actions, not Action cards. So for example if you play Farming Village (which gives you +2 Actions), then Diadem, Diadem will give you an extra +, for total.
• If you play no Action cards at all on your turn, you will have one unused Action, so you will get total from Diadem.

Other rules clarifications

• It is possible to steal Diadem from another player by using Thief.
• If you play Diadem during your Action phase, such as with Black Market, it does not use up your remaining Actions; it only gives equal to their number.

Strategy

For discussion of Diadem's interaction with Tournament, refer to the Tournament strategy section.

Diadem is usually weak compared to the other Prizes but can be worthwhile in certain specific circumstances. First, its ability to convert a surplus of terminal space into can occasionally be a worthwhile form of payload, e.g. if you are using a lot of villages for effects other than +Actions, or if you have a Champion in play. Second, it is a unique Treasure, which makes it significantly better than a Duchy for scoring with Keep.

Versions

English versions

Print	Digital	Text	Notes	Release	Date
		When you play this, + per unused Action you have (Action, not Action card). (This is not in the Supply.)		Cornucopia	June 2011
		When you play this, + per unused Action you have (Action, not Action card). (This is not in the Supply.)	Digital version may show a cost of rather than .	Guilds & Cornucopia (2017 printing)	March 2018
		+ per unused Action you have (Action, not Action card). (This is not in the Supply.)	Digital version may show a cost of rather than .		June 29, 2022

Other language versions

Language	Name	Print	Digital	Text	Notes
Czech	Diadém
Dutch	Tiara (lit. tiara)
Finnish	Otsakoru (lit. forehead jewel)
French	Diadème			Quand vous jouez cette carte, + par Action inutilisée (Action, et non carte Action). (Ne fait pas partie de la réserve.)
German	Diadem			Wenn du diese Karte ausspielst, + für jede Aktion, die du noch zur Verfügung hast (Aktion, nicht Aktionskarte). (Diese Karte gehört nicht zum Vorrat.)	(2011)
	Diadem			+ für jede nicht genutzte Aktion in deinem Zug. (Diese Karte gehört nicht zum Vorrat.)	(2014) translation errors: omitted "When you play this…" omitted "(Action, not Action card)" added "…during your turn."
	Diadem			Wenn du diese Karte ausspielst, + pro nicht genutzter Aktion (Aktion, nicht Aktionskarte) in diesem Zug. (Diese Karte gehört nicht zum Vorrat.)	(2019)
	Diadem			+ pro nicht genutzter Aktion, die du hast (Aktion, nicht Aktionskarte). (Diese Karte gehört nicht zum Vorrat.)
Italian	Diadema
Japanese	王冠 (pron. ōkan)			未使用のアクション使用権1つにつき+。 (このカードはサプライに置かない。)
Polish	Diadem			Kiedy zagrasz tę kartę + za każdą swoją niewykorzystaną akcję (Akcję, nie kartę Akcji). (Ta karta nie należy do Zapasów)
Russian	Диадема (pron. diadyema)
Spanish	Diadema

Trivia

Official card art.

Secret History

Diadem started in the large version of Alchemy long ago, as an Action: "+. Return this to your hand." It was a cute combo with Villages, but useless without them. I then tried some "choose one" versions, which solved the problem of it sometimes being dead, but didn't make the actions-to-money part any better. I eventually gave up on it, and well here it is at last.

—Donald X. Vaccarino, The Secret History of the Cornucopia Cards