You dont have to be a finance expert to see that Magic is, always has been, and always will be an expensive game
Heart of a Duelist Heart of a Duelist is a cute reference to the Yu-Gi-Oh
As someone who is used to digesting rule books and regurgitating them in a more personal, digestible way like a mother pigeon, I think a lot about the process of learning to play games
In sum, it's evoke and plot's secret child
Delighted Halfling is a cheap mana dork, or a creature that can tap for mana, and it neatly fits the set's "legends matter" theme with its abilities
Not only can this damage be used to flexibly remove problematic creatures and planeswalkers, but with enough dying Elementals at your disposal, this effect can be used to immediately close out a game