Act of Treason, Goatnap, Hijack, Kari Zev's Expertise, Mark of Mutiny, and Traitorous Blood are all pretty much the same effect, Mark does have the added benefit of putting a counter on the creature, so you only need Marchesa and a sac outlet for it to steal something permanently
The Rockets Trap (G1) #19, similar to Team Rockets Handiwork, allows for some coin flips and quite significant disruption
While he had previously drawn cards for Unsanctioned and Mystery Booster, those are only playable in those formats
Mewtwo awakens for the first time and makes friends with the little girl and the other Pokmon clones in the lab
Nicol Bolas, Dragon-God is one of the simplest game-enders, but it might be hard to pull off when everyone has consistent access to their legendary commander
Sure, youre only able to reanimate the top card of your graveyard, but thats fairly easy to manipulate, so it shouldnt curtail too many of your plans