diff --git a/api/functions/Auxiliary/selfbanishcost.yml b/api/functions/Auxiliary/SelfBanishCost.yml
similarity index 81%
rename from api/functions/Auxiliary/selfbanishcost.yml
rename to api/functions/Auxiliary/SelfBanishCost.yml
index a430b25e..dad9021d 100644
--- a/api/functions/Auxiliary/selfbanishcost.yml
+++ b/api/functions/Auxiliary/SelfBanishCost.yml
@@ -1,8 +1,8 @@
 ---!function
-name: selfbanishcost
+name: SelfBanishCost
 namespace: aux
-description: An [EffectCost](/api/types/EffectCost) function that checks if an effect's handler can banish itself as activation cost.
-summary: Cost function for effects that banish their handler as activation cost.
+description: A baseline [cost function](/api/types/EffectCost) used for effects that banish the activating card itself as cost, such as `You can banish this card (you control/from.../etc); ...` (e.g. "Destiny HERO - Malicious").
+summary: Cost function for effects that banish the card itself as cost.
 status:
   index: stable
 aliases: