The best white card in MTG is Swords to Plowshares because it exiles almost any creature for just one mana, works at instant speed, and remains effective across Commander and competitive formats
The epitome of this for Commander is Drannith Magistrate
Elvish Mystic + Llanowar Elves Elvish Mystic and Llanowar Elves are two copies of the same card, and one that youd rather run in multiples to achieve a critical mass
Whenever you play a second action in a turn, you gain 3 lore immediately, and its got 6 health and only costs 3
All of the starter decks so far have had a Rare and a Super Rare for the foils, and Pan is a Rare
Honorable Mentions The more impactful spells, however, will damage each opponent, not just one of them