For better or worse, Partner is a part of the format now, and barring a Companion-esque power-level errata coming sometime in the future (extremely unlikely, given that Partner has no real effect on Constructed formats, which is what drove the Companion errata), it will remain difficult to balance and a point of contention
This might seem like a huge flaw, but you will find that it benefits you
There are plenty of other options in these colors, but think about cards that have multiple applications across opposing archetypes, and that you can flexibly sub in when and where need be
One of these Scene Bundles, Garland at the Chaos Shrine , is based on the original Final Fantasy, and is where all the new MTG cards with the Party mechanic can be found
Kor Firewalker One of whites strengths in Modern is having access to some of the cheapest and most effective sideboard hate cards
I usually stay clear of random cards, but Zurzoth is just plain devilish fun