So... Allies. They're really parasitic but one of my friends wanted to see it work. I might just cut a lot of the allies that require too much work in the future. Also, it's a tribe that at least wants WR to work, and likely wants G and B. Ideally, this cube could support this without too much issue, but it's stretching a bit thin compared to UG or UW for Merfolk, or how most good party cards are in W, U, or B and have incidental value.

At the very least, a lot of good allies fit in other synergies, and vampires/kor tribes as well.