What exactly triggers master of evil affiliation ability?

[BigMekLigchukka]

Can we get clarity on what counts as damage from an attack. 
Is it from the dice rolled in the attack only? eg the 5 attack dice from red skulls strike. Or are things such as the explosion from Bobs excessive violence which do not require any trigger beyond an attack included? Since this is damage in the attack and occurs before the attack is resolved.

Many thanks in advance,

Lugchukka (need to change my profile name 😅)

[Negoldar]

Attacks deal damage in step 12 of the attack timing chart. The damage dealt is determined in step 10c.

Your other examples are effects of the attack, but they don’t deal damage as part of the attack. 

[BigMekLigchukka]

Thank you, much appreciated.