Along with all the colorful new blocks, Tetris DX introduced new features like battery-saved high scores, the ability to pause and resume sessions, and a new mode that allowed you to go head-to-head with a CPU opponent
Expect lands, removal, staple effects, and cards which will play well and differently on different planes
Many of the cards here also work to upgrade easily into a true Commander list, though I'd also recommend looking into the new Fae Dominion preconstructed deck if you were to go that route
Storm is an incredibly powerful mechanic, so much so that numerous storm cards have been banned from formats like Pauper simply for being far too much
This means that until someone walks into their store (or mails in a copy through their buylist), giving ChannelFireball or Card Kingdom a copy of Greed to sell, their list price will represent the old pre-buyout pre-spike price, which likely isn't real either