diff --git a/resources/ext.scryfallLinks.tooltip.js b/resources/ext.scryfallLinks.tooltip.js
index edd96d0..4c2df5b 100644
--- a/resources/ext.scryfallLinks.tooltip.js
+++ b/resources/ext.scryfallLinks.tooltip.js
@@ -55,7 +55,9 @@
 					tip.reference.href = permapageUri.href + '&back';
 				}
 			} else if ( data.layout === 'split' ) {
-				if ( data.card_faces[ 1 ].oracle_text.startsWith( 'Aftermath' ) ) {
+				if ( data.set.match( /cmb\d/ ) ) {
+					// Do nothing; Mystery Booster playtest split cards are vertical orientation
+				} else if ( data.card_faces[ 1 ].oracle_text.startsWith( 'Aftermath' ) ) {
 					if ( isSecondface ) {
 						img.classList.add( 'ext-scryfall-rotate-90ccw' );
 						// We add rotationClass to the reference attributes to cache it