A simple way to start evaluating a card is to ask yourself, What value do I get for playing this? EDH is a game of big spells, big creatures, and big plays, so a vanilla 2/2 probably isnt going to get very far into your deck construction process if you start with this question
On a completely different tonal note, future Pokemon Card Art Spotlight subject Aoki Toshinao has crafted a positively wonderful scene here
Quickly flooding the battlefield with little 1/1 green guys is a very effective strategy
As such, if you want lifelink cards, the appropriate theme boosters will help
The ones included, Quandrix CommandQuandrix Command and Commit // MemoryCommit // Memory, are a little slower than the average blue player's arsenal
Just be sure that youre purchasing from a trusted seller