diff --git a/src/mlpccg/draft/types.ts b/src/mlpccg/draft/types.ts
index 58f4ae7..3306bd6 100644
--- a/src/mlpccg/draft/types.ts
+++ b/src/mlpccg/draft/types.ts
@@ -20,27 +20,46 @@ export interface AlternateProvider {
 }
 
 export interface SetDraftOptions {
-  type: "set";
+  source: "set";
   set: string;
 }
 
 export interface BlockDraftOptions {
-  type: "block";
+  source: "block";
   block: string;
 }
 
 export interface CubeDraftOptions {
-  type: "cube";
+  source: "cube";
   url: string;
 }
 
 export interface I8PCubeDraftOptions {
-  type: "i8pcube";
+  source: "i8pcube";
   url: string;
 }
 
-export type DraftOptions =
+export interface LimitedBoosterDraft {
+  type: "booster-draft";
+  packs: number;
+}
+
+export interface LimitedSealedDraft {
+  type: "sealed";
+  packs: number;
+}
+
+export type LimitedGameType = LimitedBoosterDraft | LimitedSealedDraft;
+
+export type DraftType =
   | SetDraftOptions
   | BlockDraftOptions
   | CubeDraftOptions
   | I8PCubeDraftOptions;
+
+export interface SessionOptions {
+  players: number;
+  spacing: "evenly" | "randomly";
+}
+
+export type DraftOptions = SessionOptions & LimitedGameType & DraftType;