Seeing Red is a Legends of Idleon summoning upgrade. When an enemy crosses your line and damages you, all units get 1% DMG for the rest of the fight. This stacks every time an enemy crosses your line.

Seeing Red | Idleon Toolbox

When_an_enemy_crosses_your_line_and_damages_you,_all_units_get_{%_DMG_for_the_rest_of_the_fight._This_stacks_every_time_an_enemy_crosses_your_line.

Seeing_Red

+{%_Red_Essence_generated_per_hour_for_each_Red_circuit_win.

Red_Essence_Ragin'

When_spawning_any_unit_during_competition,_+{%_chance_to_also_spawn_an_exact_duplicate,_free_of_charge!

Wiki

Seeing Red

Unlocks