I need precision about the fighter feat 'improved knockdown'.
Knockdown, the initial version, takes 2 actions and counts for attack penalty.
Improved knockdown is written with "with a single blow" and "a single Strike" in his description.
So, for improved knockdown:
1) do you need 1 or 2 action(s) to use it ?
2) does it count as 1 or 2 attack(s) for penalty attack ?
The feats below:
Knockdown
Two Actions
Feat 4
Traits: Fighter, Flourish
Prerequisites: trained in Athletics
Source: Fighter (Class Feats), user-added
You make an attack to knock a foe off balance, then follow up immediately with a sweep to topple them. Make a melee Strike. If it hits and deals damage, you can attempt an Athletics check to Trip the creature you hit. If you’re wielding a two-handed melee weapon, you can ignore Trip’s requirement that you have a hand free. Both attacks count toward your multiple attack penalty, but the penalty doesn’t increase until after you’ve made both of them.
Improved Knockdown
You can dash your foe to the ground with a single blow. When you use Knockdown, instead of making a Strike followed by a Trip, you can attempt a single Strike. If you do and your Strike hits, you also apply the critical success effect of a Trip. If you used a two-handed melee weapon for the Strike, you can use the weapon’s damage die size instead of the regular die size for the damage from a critical Trip.