Its a lot easier to simply save up your wildcards by opening the current booster set and reviewing what pieces you have available so that you can craft cards from the older sets
From there, its usually correct to keep a low curve with multiple 1- or 2-mana cards and a few 3-drops, and your 4-mana cards like Chandra, Torch of Defiance should be your more impactful threats or win conditions
Maybe some cheap Evasive characters
Maybe the connection is a creature type, or the cards play well together, or they have some story element in common
Viewpoint Synchronization A deck that does commander damage makes Viewpoint Synchronization awesome ramp often easier to manage the conditions of in green than a card like Nissa's Pilgrimage
These cards are sometimes even more valuable to collectors than a perfectly-printed copy, so make sure you use other methods to determine if the card is genuine and poorly printed, or a fake