[casthaven]Subterranean Hangar[/casthaven] and its storage cycle [casthaven]Hollow Trees[/casthaven] and its storage cycle [casthaven]Fungal Reaches[/casthaven] and its storage cycle
Mardu Energy excels at flipping Sephiroth in mildly impressive boards, turning into an easy win condition that can double as card generation
Just reply if you're interested on seeing the full archetype after seeing the Main Boss Monsters and Support, and I'll post the link
These boss monsters are unaffected by card effects, meaning the only way to get rid of them is to either destroy them by battle or tribute them with something like Lava Golem, Super Poly, or a Kaiju
As for the cards, fans will be able to try to get Bambi (Prince of the Forest), Flower (Shy Skunk), Thumper (Young Bunny), Jafar (High Sultan of Lorcana), Magic Carpet (Phantom Rug), Aladdin (Vigilant Guard), and much more