I agree with all of them besides Zed. His current spell works a lot better in most situations than death mark would. The Lulu and Shy switches would be pretty legit buffs to their threat capacity, especially since Shy could almost level the same turn she comes down if you have three mana banked before attacking. Helmer’s switch would also make leveling him easier. In fact you could level him on turn six if you have his spell in hand, the six mana worth of turrets spawn. You also get the fleeting floor b gone. Taric is already pretty solid, being able to turn extra copies into a spell shield would make for some serious combos. Darius’ switch would be good, but overall he just would still be weak. None of his spells seem good to me.