If you exiled a nonland card this way, create a Treasure token. More creatures is good, and Treasure tokens are famously absurd, so this seems like a great card in Lost Caverns of Ixalan
However, Jace's power level is well known, and even if he doesn't find a home in the versions of Control, it's possible that Dimir or even Izzet lists will be interested in the Planeswalker due to its combination of abilities in a format with Fetch Lands
although it is still set in Innistrad and its associated sets, we will be looking at cards that give a feeling of triumph
Whether or not you can actually use the additional mana is contingent on the game state if youre hell-bent with no activated abilities to spend mana on, Treachery is just a five mana Control Magic
I like tossing in model lands from Zendikar Rising in my land spots, so I have 37 proper lands and then some modals like the Call of Emeria