As we often say in Magic , your life total is a resource and ending a game on next to zero life is the same as winning it at 100 but I do believe that casual Commander players are concentrating on the transactional nature of life totals in predominantly one direction
I think this precon holds up pretty well against other decks in Starter Commander
Say that you have 3 soldiers including Myrel, Shield of Argive on the battlefield while Ojer Taq, Deepest Foundation is also present
This is going to be bonkers in Commander, though, protecting things from board wipes, poofing Voltron attackers, blanking blockers
So I'll be mentioning both cheap and pricier spells and let you decide where you want to draw the line
It must also not have an activated ability that costs a different color than your Commander