mtg whenever you target a creature draw a card Chulane, Teller of Tales [Throne of Eldraine] return another target creature card with mana value 3 or less from your graveyard to the battlefield. Gixian Puppeteer

You don't need to attack with Hakbal, but when you do you'll be able to put a land from your hand onto the battlefield

If the game plan is going reasonably well then you should have the most creatures on the board, making the first ability redundant

But what the card does do is make your deck operate more consistently, allowing you to play lands from the top of your deck, and dodge the dissatisfaction of a late land draw

(After all, its still Gaston.) Gaston, Intellectual Powerhouse usually costs six ink to get onto the table, but if youre smart with your deck choices you can Shift him onto a decidedly less brainy Gaston for just four ink