Pre-War Formalwear is a staple of Legacy Death and Taxes decks as a way to keep your creatures around since the majority of the deck are creatures with a mana value of three or less
Cloud from Final Fantasy VII Cloud works well if he has Equipment
At a measly three mana, being able to play revealed cards from the top of your library whilst simultaneously doubling landfall effects is an incredible upgrade for landfall decks
(2021-03-19) If a card with flashback is put into your graveyard during your turn, you can cast it if it's legal to do so before any other player can take any actions
Most are elegant remixes of traditional MtG functions, like Tiered instant spells that allow players to choose higher costs for more powerful flavours of magic (eg
UB can play off the same strong commons and uncommons as UR does, and it has some great expensive spells to pair them with like Sephiroth's Intervention, Ice Magic, Dreams of Laguna (flashback), and Sidequest: Hunt the Mark