By running any of Red's standard "loot" effects that discard to draw that many cards, like Demand Answers and Thrill of Possibility which cost us 2 cards to draw 2 cards, Inti can turn these card-neutral cards into card advantage by adding an "extra" card to the exchange
Never particularly good in Commander, past its prime in most Constructed formats, and only reasonable at best in current Standard, its clear that this iconic black planeswalker hasnt kept up
Before this change, Wizard Mentor was a first pick card which could save your creatures from creature kill spells, allow you to reuse the bevy of 187 creatures in the format (Ghitu Slinger, anyone?), and at worst case scenario allow you to play emergency defense
But recontextualized, I see it becoming a third Exsanguinate for a mill deck, when combined with the previous two cards