In addition to the main set, there is Avatar: The Last Airbender Eternal
There is definitely room for improvement, and I would argue you could go even lighter on the creatures, taking out some unnecessary ramp or even removing the Monarch mechanic entirely, and instead going with some additional enchantments or spells to really apply the pressure to your opponents
Summary The Rise of the Floodborn expansion for Disney Lorcana provides a good entry point for beginners, with starter decks that are not too complex
Its other abilities will tell you how it benefits the equipped creature, and it can be attached to other creatures you control using its equip ability
Do you think serialized cards will retain their big price tags
Sorcery Color tag templates(None) Tree of Tales Artifact Land Color tag templates(None) Umezawa's Jitte Whenever equipped creature deals combat damage, put two charge counters on Umezawa's Jitte