Once Donate was printed, Illusions of Grandeur became paired with it in a Necropotence-fueled combo deck called "Trix." It tore through the extended format in which it was legal
That said, there is one card in particular that has completely captivated my attention: Well, not exactly Blood Artist, but close: [card]Blood Artist[/card], combined with sacrifice outlets and creatures that leave behind tokens after dying, is the centerpiece of an archetype known as The Aristocrats, regardless of the format (and regardless of if there are any cards with the word aristocrat in the deck)
In Temur ramp decks, its a game-ending top-end threat that floods the board with value in one explosive turn
Adding +1/+1 counters does help you station better, and it cannot be underestimated how much removal you dodge with hexproof and indestructible
Lets say there are four others on the board, for a total of five Lightning Bolts