Trigger - Enter: Attach this to the Boss. Then, for each opposing player, put a Doubt on their Clash card with the lowest attack power.
When this card takes damage, the Leader diminishes X where X is the highest Doubt among Clash cards they control.
When a Clash card leaves play, each opposing player adds a Doubt to their Clash card with the least Doubt.
When an opposing player plays a Clash Buff, they lose two health.