Heiress 3x 43 Champs
Three 4:3 champions on UNM with the farmable rare--Heiress--as speed booster and cleanser (of stun or affinity debuff depending on delay). All double turns happen on the same CB turn.
4:3 champions: 209-211, 221-238, 240-246
The delay of the speed buff determines the timing of the double turns. Two main variations:
2-turn delay: double turns after the stun, Heiress can cleanse the stun as long as it lands on the other 1:1 champion. Can be used to implement a Roshcard unkillable (e.g. with Skullcrusher) or pseudo-unkillable with a tanky stun target.
1-turn delay: double turns before the stun, Heiress cleanses the affinity debuff (should work on spirit with the fastest champion at >=245 and >=7/6 * third fastest, although Heiress would need block debuffs or another force champion in order not to get stunned)
NM: replace Heiress with a 213-221 champion, e.g. Sepulcher Sentinel (double turn after AoE1, can block the affinity debuff and stun). The original 4:3 champions still go 4:3.