yugioh fusion spell cards Surprise - Yu-Gi-Oh! Card Database player and collector. one of my favorite details

Sets FEATURING RAVNICA Ravnica, City of Guilds - October 2005 Guildpact - February 2006 Dissension - May 2006 Return to Ravnica - October 2012 Gatecrash - February 2013 Dragons Maze - May 2013 Guilds of Ravnica - October 2018 Ravnica Allegiance - January 2019 War of the Spark - May 2019 Murders at Karlov Manner - February 2024

Also, since they're phantoms after all, they return back to your deck during the end phase, and their ATK & DEF is 0 to show that "They're all in your mind"

Mana Vortex Mana Vortex is a weird card

However, Deep Pocket Monster claims that the process was challenging and required him to speak with various employees before it was finally approved