They often see play in decks that are trying to fill their graveyards and play multiple spells per turn
While situationally useful, the Orb was not worth the slot and I changed it to a second Relic of Progenitus for Sundays Invitational Qualifier
Please, do tell
Commander, Legacy, Pauper, Vintage Alchemy, Brawl, Competitive Brawl, Historic, Modern, Pioneer, Standard, Timeless
This actually came as a surprise to me, as conditional mana ramp that adds extra hoops to jump through beyond having fewer lands than your opponent is almost always unplayable, but when that hoop is take this creature off the battlefield, and the reward is both ramp and potentially filling your hand with any land with the Plains subtype, the results are surprisingly effective