Barrin and fellow Man-o-War variants offer one-time support, but they pale in comparison to the repeatable value offered by cards like Trusted Advisor, Cache Raiders or Portal of Sanctuary
Its a combination of card selection and card advantage that Naya colors dont get a ton of access to
There are so many different ways to sell your cards, whether theyre old, new, graded, ungraded or even if theyre non-Magic cards like Pokemon, Yu-Gi-Oh or even MetaZoo
There are so many great ETBs these days, so youll often just be buying something back in addition to bouncing another creature and drawing a card
it seems more effective to amass an army of Wizard tokens than to double their damage output with Trance Kuja, Fate Defied
Maybe you need to pitch a few high-cost creatures to bring back with a reanimation spell or you drew a few too many lands lately and can afford to discard them