orbitalint said: Asked the same question long ago - https://forums.d3go.com/discussion/19473/is-there-a-negative-multiplier-on-cascade-match-dmg#latest.There is a .75 damage multiplier on each subsequent match of a cascade after the first. It's so a ridiculous cascade doesn't kill you or the opponent on that alone. They just have all the AP instead, hehe.So, order/gem choice of your first match matters. If given the choice, I always try to choose the five star gem match first. Hope that helps.
MissChinch said: IIRC this is one of the things that make strike tiles so amazing, they apply a flat damage addition and are not subject to the diminishing returns of a cascade.