Relief Captain by itself is a 3/2 creature for four mana, which isnt very good in any format
Might be good in haste decks like both versions of Samut, or as a blitzer in Henzie
While its hard to say with certainty, as prices can jump about quickly, they do not seem worth it from a monetary standpoint theyre mainly worthwhile for fans of the art
Table of Contents show What Are 5-Color Commanders in MTG
Either way, it does seem like Voltron and other forms of fast aggro might be emerging as the better decks in the average Bracket 3 kind of game
Matches are played as per the rules of your chosen format (Commander, Standard, etc) but with the addition of a planar deck, a separate deck of oversized plane cards that change the rules of the game