"BG Rez Timer" has a nice way to start the res timer at start (BattleInfo currently only show it after @player has received a res).
https://wago.io/wm2BS70cN/2

aura_env.startText = { ["The battle for Alterac Valley has begun!"] = 0, ["Let the battle for Warsong Gulch begin!"] = 5, }