Lightning, Lone Commando (Isshin, Two Heavens as One) Rating: 2/10 Isshin, Two Heavens as One naturally lives and dies by what kinds of attack triggers you have access to, because a 3-color vanilla creature is clearly unplayable
Stack them so it puts all the permanents into play first to get their ETB triggers, and then exiles them again, to produce more tokens and set you up to do it again the next turn
Firebending is a keyword ability, adding mana during attacks that lasts until the end of combat
This scaling mechanic punished opponents for building up their own attackers
It also has the already mentioned advantage of being in pretty great colors for knight support
The aggressive deck was thought to be favored against the Domain Overlords deck that Nass and a pair of others had piloted to the Top 8, and there was a distinct possibility that the Domain deck that had performed the best of the "big three" over the weekend would meet its end