This mechanic came out of my desire to find a way to involve art in the game play
When this was printed its ability to not lose mana was something players hadnt seen before
Iconic Cards: Snapcaster Mage, Vendilion Clique, Delver of Secrets, Teferi, Time Raveler Popular Decks: Delver, Spirits, Ponza, Izzet, Mongoose, Prowess 5 Combo Combo decks win by assembling a combination of cards that either win the game immediately, or make it so exceptionally difficult for the opponent to win that they often concede on the spot
Sephiroth, Planet's Heir** Sephiroth here is in his Starter deck form, and hes most disappointing because his payoff for his weak board wipe ability doesnt work well with the way to get the most from it with blinking
Flashing in Gerrard's Hourglass Pendant could make you the hero of the pod when someone casts an Expropriate, but this effect definitely feels a bit more niche than its other uses