A three mana Rofellos is still a very good and scary play
It costs six mana, but you scry the top three cards of your library, then reveal the top card and draw cards equal to its mana cost
Playing politics and changing a key creature to blue can allow it to attack after an Inundate, all at the cost of set up comparable to a Cyclonic Rift
You want High Tide in the graveyard as soon as possible to exile with Chun-Li so you can use it every attack
Emblems cant be removed by normal means, so even if Sephiroth is defeated, the emblem sticks around, pinging your opponents for the rest of the game
Of the most popular, generation two and five have been thrown out, but a recent leaker has revealed it may not be either of these