1 files changed, 7 insertions, 0 deletions
diff --git a/engine/card/reaction.go b/engine/card/reaction.go
new file mode 100644
index 0000000..3eed8c4
--- /dev/null
+++ b/engine/card/reaction.go
@@ -0,0 +1,7 @@
+package card
+
+import "sakura/engine"
+
+type IsReaction interface {
+	Applicable(c engine.IsCard) bool
+}