[History, quotes] Athena the god tier hero or nerfing the damage curve or complicated hero interactions.
God tier Athena’s fall from godhood was a combination of rewriting the damage curve, nerfs, stealth nerfs, adding elite 5* attack buffers ( Tarlak/ Ranvir/ Miki ), adding more elemental defense debuff 5* heroes and more rainbow/ generic/ multipurpose defense debuff 5* heroes.
For defense hero, see
Elemental defense debuff
Arthur ( 5* blue ), Evelyn ( 5* green ), Frida ( 5* blue - because Arthur only target not target and nearby ) were added to Panther ( 5* purple ), Falcon ( effectively a 5* red - see notes ), and Jackal ( very fast mana speed - and revive scrolls - needed for this fragile hero so yellow is once again disadvantaged ).
These elemental defense debuff heroes also encourage Empire’s hidden buff, basic color stacking and advanced color stacking ( see notes ).
Elite 5* attack buffers
Rainbow/ generic/ multipurpose defense debuff 5* heroes
More rainbow/ generic/ multipurpose defense debuff 5* heroes were added to the game ( Finley, Kunchen, Santa, White rabbit )
Click for notes
Falcon+ Boldtusk+ Wilbur synergy
Basic color stacking
Click for basic color stacking
Advanced color stacking
With the damage formula unknown, players only have a partial understanding of advanced color stacking. Mostly complicated by the attack stat soft cap.