Cards like Polluted Delta, Flooded Strand, and Scalding Tarn made mana fixing way smoother and let 3- to 5-color decks run like theyre on rails by finding lands with the right basic types, including your best dual and shock options
, Remove a javelin counter from this creature: It deals 1 damage to any target
Surge of Salvation Surge of Salvations specificity often regulates it to the sideboard, though the general hexproof attached to the first ability offers enough universality that you could run it in the 99 of an EDH deck if you really wanted
New world order In one of his articles, Mark Rosewater introduced us to the New World Order in their design process: They would make sure that the common cards as they are the cards that new players will have the most contact with will never be overly complex: They should be easy to understand and easy to play with, so as these players become more interested and start buying more packs, they will gradually start having contact with rarer, and more complex cards, making the learning curve less steep
Furthermore, things that wont migrate include: unopened packs and items, currency, avatar items, friend lists, and decks youve made
Absolutely worth a slot