The Scarab God, Gisa and Geralf, and Grimgrin, Corpse-Born are the three contenders here
When it does, it exiles a players graveyard
It does have a powerful search engine, letting you filter decks down to specific cards in specific formats, so I can usually find discussion in the comments of the most popular decks returned by those searches
Ramunap ExcavatorRamunap Excavator, Crucible of WorldsCrucible of Worlds, and Life from the LoamLife from the Loam are great in slower games, where we can keep replaying our fetches and get more consistent mana sources over time
Even then, the answer might be to accumulate a large hand to improve your odds before playing Gamble and hoping for the best
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