Barret Wallace isnt the only Final Fantasy VII icon to get an underwhelming card in this round of MTG leaks
And unlike most abilities that stipulate that the character cant quest after being readied, Eruption says nothing of the sword, making this a pretty strategically advantageous card
In most cases, the controller of the attacking creature will still become the monarch as it is likely their turn

Facilier Savvy Opportunist 3x HeiHei Persistent Presence 3x Kuzco Wanted Llama 1x Madam Mim Fox 3x Madam Mim Snake 2x Merlin Crab 3x Merlin Goat 1x Merlin Rabbit 1x Merlin -Shapeshifter 2x Merlin Squirrel 2x Freeze 2x I'm Stuck 2x Beast Forbidding Recluse 2x Benja Guardian of the Dragon Gem 2x Cinderella Knight in Training 2x Eli La Bouff Big Daddy 2x Hercules Hero in Training 1x Kronk Junior Chipmunk 2x Lawrence Jealous Manservant 3x Lilo Galactic Hero 2x Prince Eric Dashing and Brave 3x Prince Naveen Penniless Royal 1x The Huntsman Reluctant Enforcer 2x The Prince Never Gives Up 1x Tiana Celebrating Princess 3x Tiana Diligent Waitress 2x Last Cannon 2x Mouse Armor "Tactical Teamwork" Amber/Sapphire 2x Bashful Hopeless Romantic 1x Christopher Robin Adventurer 2x Doc Leader of the Seven Dwarfs 2x Dopey Always Playful 3x Gaston Baritone Bully 1x Grand Duke Advisor to the King 3x Grumpy Bad-Tempered 2x Happy Good-Natured 2x LeFou Bumbler* 3x Sleepy Nodding Off 3x Sneezy Very Allergic 2x Snow White Lost in the Forest 1x The Queen Commanding Presence 3x The Queen Regal Monarch 2x Painting the Roses Red 1x Belle Inventive Engineer 3x Cruella de Vil Fashionable Cruiser 1 Gaston Intellectual Powerhouse 1x Hiram Flavershan Toymaker 2x Judy Hopps Optimistic Officer 3x Owl Logical Lecturer 2x Philoctetes Trainer of Heroes 3x The Nokk Water Spirit 1x Winnie the Pooh Having a Think 2x Four Dozen Eggs 2x Launch 2x Fang Crossbow 2x Gumbo Pot 3x Pawpsicle

these are newly-commissioned pieces used solely for the 204 cards in the initial starter sets plus many hundreds more that are sure to come
Note that playing Jidoor from exile this way still counts as your land play for the turn, so you can do this only during your main phase and only if you haven't already played another land that turn