20 Ways to Win is an upcoming precon which is clearly themed around alternate win conditions: cards that let you win the game by completing some kind of special objective, from casting a particular spell twice to collecting a bunch of treasure
In Temporal Intervention, Wizards has brought Thoughtseize to Pauper, albeit with a pretty sizable asterisk attached
Hazel is best used to power a game-ending Drain Life
Gifted with the ability to adapt to changing circumstances, they are never caught off guard
Choco-Comet is a great way to close the gaps in life totals (if not outright win the game) while leaving behind a token, something similar cards don't do
A deck focused on sacrifice synergies, such as aristocrats or graveyard recursion strategies, would benefit from using Zodiark, Umbral God in Magic: the Gathering