This deck has some interesting decision points and isn't a linear strategy, but it's also not the most complicated out there - and that's important for a beginner deck
Of course, Secret Lairs have had bonus cards for a while, but at first these were a fixed card everyone who bought the same lair was guaranteed to get, and not typically something super rare either
Its not hard to make permanents leave the battlefield regularly, especially when the other permanent in the command zone can bring a lot of them back
Svyelun of Sea and Sky Ward 1 is more of an annoyance than a real protective ability, but Svyelun of Sea and Sky has built-in resilience, so your opponent cant brush it aside
Lore-wise, there is almost an internal power struggle to determine which one is more important, but when it comes to the cards, you're going to be balancing a life gain and sacrifice strategy