Not the same level of pump, but one reminiscent of Kiln FiendKiln Fiend, the Red Mage's RapierRed Mage's Rapier can set up the ability to one-shot a player very quickly
I also think how one-dimensional Vannifar feels and how likely you are to suffer from The Rafiq Problem keep even a card this powerful from topping the list
its an endearing bit of worldbuilding that makes Theros feel like a rich, breathing world, instead of just some artwork in a trading card game
The most direct strategy involves giving bad gifts, cards that actively harm their new controller, such as Steel Golem, which prevents them from casting creature spells, or the notorious Illusions of Grandeur, which causes a 20-life loss when it leaves the battlefield
In fact, the non-creature versions of these effects are usually more resilient, since they can't be picked off by creature removal
It does a lot of what Wurmcoil Engine does but it also give the life quicker and deals with a specific problem