If a source an opponent controls would deal damage to you or a permanent you control, prevent 1 of that damage
It doesn't really combo with anything, it just does big damage something everybody can appreciate
Wilds of Eldraine returns to the fairytale-inspired, whimsical plane of Eldraine this time, with a twist
Spinerock Knoll is relatively easy to pull off in Commander and can provide you with extra cards (sort of), and Mines of Moria let you bank mana for a rainy day
It is just so efficiently costed (often a two mana 7/7 or 8/8 flyer with the potential to grow even bigger with multiple copies), that those stats are simply good enough on their own
Once this score is assigned, your card will be placed in a hard case from which it cannot be removed