Sacrifice a creature like Death Cultist, Mortuary puts it back on top of your library, and Gwenom lets you immediately replay it by paying 1 life
Second, its ETB trigger, creating not one, but two foods when it enters is just a great bonus, which leads us to its third thing, which is really nice card advantage, especially for a Golgari deck, because there's not too much black/green draw that's legal in standard
Illusionist's Gambit can absolutely save you while ending the night for someone else, but this is the poster child for a 4-drop that will rot in your hand while you wait for a better time to cast it
However, it also lets you draw a card at the end of your turn if a card left your graveyard this turn
[cards] Myr Enforcer Deadly Dispute Blood Fountain [/cards] Grixis Affinity, a deck many players hate to face, is notoriously difficult to outvalue once it establishes its board, primarily due to cards like Deadly Dispute and Blood Fountain
Since the discard is random, it doesnt guarantee to bin a dredger, so it shouldnt be considered a turn one play