MergeSigils is a BepInEx plugin that provides bases for merge and place above sigils. Merge sigils are sigils that have an effect when something is placed above the card with the sigil. It also enables cards to be placed above the card with the sigil. Place Above sigils are sigils that have an effect when a card with the sigil is placed above any other card. It also enables the card to be placed above other cards. To use MergeSigils in your mod, just add it as a reference in your project. To make a cusotm Merge/Place Above sigil just inherit one of the base classes and override their abstract methods. Base classes for Merge:
MergeBase - the most basic type of Merge. Has no effects on it's own. Honestly idk why you would want to use that but here you go anyways. Methods for override: OnPreMerge(PlayableCard mergeCard) (do stuff before the card merged with this is placed), OnMerge(PlayableCard mergeCard) (do stuff after the card merged with this is placed) and CanMergeWith(PlayableCard mergeCard) (optional, always returns true if not overriden) (if returns true, mergeCard will be able to be placed on this card)MergeKillOther - a type of merge that kills the card placed on this to do something. Methods for override: OnPreCreatureMerge(PlayableCard mergeCard) (basically the same as OnPreMerge for MergeBase) OnPreMergeDeath(PlayableCard mergeCard) (basically same as OnMerge for MergeBase), CanMergeWith(PlayableCard mergeCard) (exactly the same as in MergeBase). Also has one property for override: IsActualDeath (optional, returns true if not overriden) (if true, the card placed on this will actually die, dropping bones and all that stuff. otherwise, it will just kind of disappear)MergeKillSelf - a type of merge that kills this card to do something. Methods for override: same as in MergeKillOther. Also has the same property for override as MergeKillOther, with the only differecnce being that it defaults to false
Base classes for Place Above:PlaceAboveBase - the most basic type of Place Above. Has no effects on it's own. Again, idk why you would want to use that for any reason. Methods for override: OnPrePlaceAbove(PlayableCard placeAboveCard) (place above version of OnPreMerge), OnPostPlaceAbove(PlayableCard placeAboveCard) (place above version of OnMerge) and CanPlaceAbove(PlayableCard placeAboveCard) (optional, returns true if not overriden) (place above version of CanMergeWith)PlaceAboveKillOther - a type of place above that kills the card that this card was placed above to do something. Methods for override: OnPreCreaturePlaceAbove(PlayableCard placeAboveCard) (basically the same as OnPrePlaceAbove), OnPrePlaceAboveDeath(PlayableCard placeAboveCard) (basically the same as OnPostPlaceAbove), CanPlaceAbove(PlayableCard placeAboveCard) (exactly the same as in PlaceAboveBase). Properties for override: IsActualDeath (optional, returns false if not overriden) (basically the same as in MergeKillOther or MergeKillSelf)PlaceAboveKillSelf - a type of place above that kills this card when it's placed above something to do something. Methods for override: same as in PlaceAboveKillOther. Also has the same property for override as PlaceAboveKillOther, with the only differecnce being that it defaults to trueTo use BoonAPI, put MergeSigils.dll inside of your BepInEx plugins folder. It also probably works for Thunderstore Mod Manager or r2modman but I don't know for sure (I don't use them)
NOTE: This mod was developed for Kaycee's Mod beta but it should work for the normal game.