Xenoblade Chronicles: Definitive Edition - Avalanche Abaasy vs LV 1/1/20 party.
TOPPLE LOCKING..what do you expect? .
I did so much mistake in this vid. TBH there was slight nervous looking at the topple timer. That facepalm fail @3.12 kekkkk!!! Freaking love or hate this game RNG, failed chaining on first round and burst affinity not popping. I definitely prefer XC2 style although its pretty meh for end game.
Anyways
Hit formula alone will tell that you will unlike able to hit the UM post buff duration.
At this low agility, the team will miss big time if Abaasy is not toppled early. Lowering your tension and further making your hit rate near to 0.
However its not as easy as it seems. Abaasy have half topple duration and you cannot daze superboss for extra time. This is the boyz party which is known for slow party gauge builder. We are unable to use Fiora for your typical topple locking against Abaasy
I stack tons of crit rate on Reyn and link with Fiora double attack/guarantee crit. Dunban AI can sometimes be stupid and not activate Heat Haze. Which I also was idiot to miss that activation at 3.12 (facepalm second time).
Remember fiora's link is just for double attack, arts do not get that bonus so thats why i stack crit rate on Reyn
Even with all of these crit, you can see that i barely able to reactivate chain attack before topple duration times out. There are RNG involved here like burst affinity, further chain link allows you to crit during chain attack and build up party gauge.
As for Shulk, i just adapt to the situation. If i see the topple time around 20-30%, i would not risk saving his talent art just to continue chain multiplier.
PS: apparently there is a method for no topple/chain attack utilizing Riki and Shulk. However its extremely long fight.