In the case of Keruga, the companion requirement is that your starting deck contains only cards with a mana value of three or greater and lands
To make things more complicated, not all changes are permanent additions to the games ever-changing Standard format Magic tournaments usually uses only the last two years worth of cards which means that people that saw a game once, may experience another very different set of cards and frames when they come across it again some years afterwards
A great example is Aetherdrift , where the zombie faction played a huge role and really boosted the tribes presence, so it's worth looking at those to uncover zombie hidden gems
This article covers the strongest Partner Commanders and pairings to consider, with a clear focus on synergy, power level, and color identity
They are all pretty strong
To put it simply, historic decks might be the biggest specific winners of this set reveal