A quick note, before we begin: Although this article isnt specifically aimed at Commander, most of the tri-color cards these days are aimed at that format, so expect to see a lot of legendary creatures (that are also good commanders) and expensive spells
Only Obelisk has protection from enemy cards and effects, and it can still be destroyed by effects that don't declare a target
There's certain things that trigger all the time, like Ghyrson Starn, Kelermorph, that love the damage boost
The easiest way to determine if your deck belongs in bracket four or five is that four is an optimized commander deck, while five is a deck you would bring to a tournament with the intention to win
I found that some are quite easy to find here in Korea, which surprised me when I found out how difficult it was for people internationally to find these cards