Agility

Hey guys (and ladies), can somebody provide with tips how to increase my agility for my characters (I am not talking only about agility in battle, because I know equipment, angel halo, totem and child skills, angel buffs/skills/mounts can increase it during battle).

I have almost 150 Billion BR and my highest character agility is around 400 Million. With the angel buffs and mount skill it reaches max 800-900 million agility in the first turn in battle. There are people with 30 Billion BR, who start the battle with almost 1 Billion agility, despite having significantly less BR. I use characters - Lord Skyscream, 2 healers - Kitsune/Mona, Kronos and Astromancer - heroes with skills that increase the team agility, I have decent amount of homestead collections (blueprints) activated, angel buffs, mount skill adds 71% agility to the team in the start of the battle, positioned my two best heroes to receive the 10% agi bonus from the angel halo, got heavenly blade totem, which increases agility for one column of my team. How I can bulk increase my agility, since the angel essense system and godsend gives only bonus to normal stats - ATK, HP, DEF? I know homestead blueprints gives around 70-80 mil agility (the newest blueprints), but is that the only way for bulk increase and which systems in the game provide the biggest agility bonuses?

Regards and have an amazing Saturday!

M.K