What does Enderun School do in AoE3?

Janissary: damage +20%, hit points +20%; Azap: damage +20%, hit points +20%; Nizam Fusilier: damage +20%, hit points +20%. The game says: "Increases the attack and hitpoints of Azaps, Janissaries and Nizam Fusiliers."

Home City card

Enderun School

Enderun School (tech ID HCJanissaryCombatOttoman) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 1 civilization, sent from the Fortress Age. Effect: Janissary: damage +20%, hit points +20%; Azap: damage +20%, hit points +20%; Nizam Fusilier: damage +20%, hit points +20%.

Quick answers (3)

Which civilizations have the Enderun School card?: Ottomans.
What does Enderun School do in AoE3?: Janissary: damage +20%, hit points +20%; Azap: damage +20%, hit points +20%; Nizam Fusilier: damage +20%, hit points +20%. The game says: "Increases the attack and hitpoints of Azaps, Janissaries and Nizam Fusiliers."
What is the tech ID of Enderun School?: HCJanissaryCombatOttoman.

Increases the attack and hitpoints of Azaps, Janissaries and Nizam Fusiliers.

What it does

Janissary: damage +20%, hit points +20%
Azap: damage +20%, hit points +20%
Nizam Fusilier: damage +20%, hit points +20%

Cost: 1
Sent from: III
Times it can be sent: 1
Game ID: HCJanissaryCombatOttoman

In these decks

OttomansIII×1

Source: techtreey.xml and the Home City files, AoE3: DE 100.19.18309 (build 25040513).