You dont need to bounce the land, so its actually pretty reasonable as a way to punish people who dont want to play into your Torrential Gearhulk mana
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
Board & Card Games Stack Exchange Why would you want to play with a deck bigger than 60 cards in MTG
Sure, useful cards from this part of Magics history can and will spike in price, but Ive seen people worried about the supply of cards like Wall of Kelp
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
You could also get some swirly effects to signify mana as well as doodads that look like Phyrexian and planeswalker symbols