One other point to mention is that if you have a spell like Lightning Axe, which has an additional cost stapled to the main effect of the spell then you need to pay that cost even if youre casting for free
Sure, if you could play it in Commander, you might, because it would have a weird effect on the game, but since its Alchemy, despite having no reason to be, you cant without proxying it
If youre just starting your Lorcana journey, I recommend reading my complete beginners guide, which covers how to play Lorcana, the rules, keywords, mechanics, and more
You get an emblem with "Creatures you control of the chosen type get +3/+3 and have vigilance and hexproof." Each face of a transforming double-faced card has its own set of characteristics: name, types, subtypes, abilities, and so on
You do want access to a lot of mana and casting discounts
You get the ETB trigger twice for four mana