cEDH shoutout to Doorkeeper Thrull, who joins Dress Down as a flash, two-mana answer to format staples Dockside Extortionist and Thassas Oracle
Kiki-Jiki, Mirror Breaker Kiki-Jiki, Mirror Breaker is an essential piece in dozens of infinitely-executable combos
Cards that have abilities on death and when they enter the battlefield are extremely good in a Muldrotha, the Gravetide list since you get twice the value from them
Once the ability is activated and the cost is paid, its too late to stop the ability from being activated by trying to remove the creature card from the graveyard
2025: Vivi Ornitier from Final Fantasy Well, we're not quite all the way through 2025 yet, but we currently have an easy frontrunner for most broken card of the year in Vivi Ornitier
Similarly, the Lure Module Item card lets both players find Pokmon near the top of their deck