diff --git a/cardsim/card.go b/cardsim/card.go
index 0888aa6..cd51389 100644
--- a/cardsim/card.go
+++ b/cardsim/card.go
@@ -10,9 +10,19 @@ type Card[C StatsCollection] interface {
 	Title(p *Player[C]) (Message, error)
 
 	// Urgent reports whether the card is considered urgent. If
-	// the player hasa any
+	// the player has any urgent cards in hand, they cannot choose to act
+	// on a non-urgent card.
 	Urgent(p *Player[C]) bool
 
+	// Drawn is invoked after a card is drawn, before presenting it to the
+	// player. If Drawn returns `false`, the card is discarded without being
+	// put into the hand or shown to the player and a replacement is drawn
+	// instead. To put a card back on the bottom of the deck (or similar)
+	// use p.Deck.Insert (or a related function) to put it back explicitly
+	// in the right position. Do not put it right back on top of the deck or
+	// you'll create an infinite loop.
+	Drawn(p *Player[C]) bool
+
 	// EventText returns the text to display on the card. If it returns an
 	// error that is not a warning, the game crashes.
 	EventText(p *Player[C]) (Message, error)
@@ -44,7 +54,8 @@ type CardOption[C StatsCollection] interface {
 	Enact(p *Player[C]) (Message, error)
 }
 
-// A BasicCard is a Card with fixed title, text, options, and optional post-option callback.
+// A BasicCard is a Card with fixed title, text, options, and optional
+// post-option callback. It never does anything in particular when drawn.
 type BasicCard[C StatsCollection] struct {
 	CardTitle   Message
 	IsUrgent    bool
@@ -76,6 +87,10 @@ func (b *BasicCard[C]) Then(p *Player[C], option CardOption[C]) error {
 	return b.AfterOption(p, option)
 }
 
+func (b *BasicCard[C]) Drawn(p *Player[C]) bool {
+	return true
+}
+
 // A BasicOption is a CardOption with fixed text, effects, and output.
 type BasicOption[C StatsCollection] struct {
 	Text   Message