Rift of Dimensions High Score

The attack power boost for fire attribute heroes might be significant, but I managed to get my highest score ever in the event [Rift of Dimensions], so I'm posting this to commemorate it. With Tristan's leader buff, including King Arthur and Galahad, damage to enemies afflicted with stun or burn increases threefold. I wonder if that stacks to 6x or 9x? Perhaps if all characters were the type to spread stun or burn effects widely, I could have pushed it further. This time, I included two of each attribute to prioritize stat boosts, but I'm not sure which approach is more efficient... For reference, I'm also attaching a screenshot of the relics from when I achieved the high score.