More importantly, returning to Kamigawa was a big gamble for Wizards, and turning it from Feudal Japan to cyberpunk-inspired for its return trip required effectively an entirely new world, lore, and visual style to be pinned down for it to have any chance of success
There's also Cabal Coffers for a second chance at a lot of mana and Urborg, Tomb of Yawgmoth to make sure any lands you steal from your opponents can produce black mana for you
The effects from Tenth District Hero's abilities overwrite other effects that set power and/or toughness if and only if those effects existed before the ability resolved
Magnemite: Now, here we are with an uncharacteristically tender moment with Lt
How Much Life is an Extra Turn Worth
Pir's Whim Of the entire "Friend or Foe" cycle, Pir's Whim is my favorite