First thing I can tell everyone about showdown is that specific heroes you equip Should be tailored to the military composition you register with. If you register with 90% calvary than you want to equip calvary based heroes to get the highest boost. The same thing should be applied to any branch. Don't send heroes that give poor or no boosts. Trickster literally gives Zero army boosts and a few others give only heavy siege or trap boosts predominantly. Try shifting between heroes to see the shift in boost on the right side. Equip the ideal phalanx and wedge before hand as it will be utilized during the event. Last but least, sit back, grab some popcorn and have fun. I wager rss between my guildmates as to who wins the final round. Make it fun and enjoy!