The lore is pretty good, but the set itself has a lot of work to do to match up to the releases weve had so far this year - with Modern Horizons 2 being an absolutely powerhouse, and the D&D flavour of Adventures in the Forgotten Realms making for one of the most enticing sets in recent years
See also: Binder layout planner Is Pokemon GO worth collecting as a master set? Pokemon GO has 88 unique cards with an estimated completion cost of $496
Note that, because thats playing the full twenty fetchlands, unless you want Evolving Wilds, your mana gets worse after that, so its hard to justify even considering going over 80 cards in Standard, but I can imagine a reasonable case for anywhere between 60 and 80 moving forward, especially thanks to Ben Rubins proof of concept
Mystic Tomato If youve played any sort of old-school Yu-Gi-Oh, then youve definitely played Mystic Tomato
And it is typically based on changes in the game's balance or mechanics