Dont forget you can always pop them with Perlereino or Baronne, banish them with Fenrir or return it to the deck with Heartbeat or Kaleido: Rivalry of the Warlords : this is like the best one here, but they can end up in a board with Kaleido, S:P, and Grapha or even Rulkallos and Toad with a TKash as follow-up
Incapsula incident ID: 329000750018391782-62523874763936465
The difference between the cards and the original Base Set (even though they have the same attack and ability) are the illustrations, which in this promotional version are made by Ken Sugimori (one of the main illustrators of the Creatures company) while in the Base Set it was the legendary Mitsuhiro Arita
Furthermore, just like regular EX cards, M EX cards are steadily being pushed out of the game in favor of newer mechanics
The Ceruledge Illustration Rare card (not to be confused with Ceruledge ex, which is a separate card) is also absolutely stunning, with a painted, brooding look