The starter decks for Shimmering Skies have been revealed, with two very competitive ink combinations
Im also including the popularity ranking of each Doctor on EDHREC as a comparison
Can help to form powerful alliances in a format like commander, or assist your team in 2 headed giant, or emperor team games
Even if you don't want to bounce it, slotting it in a removal slot might be something you can do if you want more effects out of your spells, and it's a permanent if your deck cares about that
Everyone likes free mana and I can certainly see people attacking the cursed target so they can cast spells that they otherwise wouldn't have enough mana for, without worrying too much about the benefit that brings you

After taking another look these are cards you'll miss the least IMHO: Rune-scarred Demon (this is a lot of mana for the effect in my experience, and it's better in decks that win via combos), Burning Rune Demon (same as the above, but I like this card a bit more because it's 1 less mana), Patriarch's Bidding (this can be unplayable some games depending on the opponent's deck, and unless I'm missing something you don't have self-mill to make the card better), Kardur Doomscourge (I like this card a lot, but if you need to make space he seems pretty low synergy, also plays poorly with Propaganda effects on an opponent's board), and maybe Rite of Replication (I really love this card, but I feel like it's usually too much mana to 'do the thing', I also feel like you have a decent number of Legendary stuff that can't be copied usefully, I could see this being a pet card)