Orcs vs. Humans

2 TerMinator
You would do better to read more carefully what is being explained to you, instead of being rude to someone who understands the mechanics of Heroes better than you do. He clearly and concisely wrote the following:

each time in a double version with increasing damage.:D

where "increasing damage" is the increase of each subsequent counterattack by 1.5 times, and "double version" is the ability to stack with infinite counterattack under Readiness to deal 2 counter blows, one of which will be before the enemy's attack, and the second - after.
Therefore, your phrase

hehe, regarding griffins: I only know about combat and 1.5 damage for each subsequent counterattack, but not how it can be doubled:eek

is incorrect due to inattentive reading of the opponent's messages.