I personally believe synergy plays the most important part in deckbuilding and many times some theoretically weaker cards can have so great synergy with your deck/strategy that they can be greater options than the general best overall cards (and can be a super budget option too, as they only work with too specific decks/strategies.) Synergy applies to all categories analyzed in this article but also to cards that do not fit in any of the categories above but has a unique utility
Ive loved Eldrazi since Worldwake , and Ive wanted to build Eldrazi for so long, but the colorless options never interested me, but now we have a powerful five-color option, that also lends itself to be pretty inexpensive
Adeliz, the Cinder Wind With an ability similar to Balmor, Adeliz is actually the slightly stronger option, though she lacks the beneficial trample keyword, and she is only limited to boosting Wizards not all creatures
Nahiri's Resolve gives all your creatures haste and a small board pump, but more importantly, lets you blink as many artifacts and creatures as you'd like, kind of like Yorion, Sky Nomad, but once per turn