What does Finnhorses do in AoE3?

Hussar: hit points +20%; Hakkapelit: hit points +20%. The game says: "The sturdy breed of Finnhorses improves the hitpoints of Hussars and Hakkapelits."

Home City card

Finnhorses

Finnhorses (tech ID DEHCFinnhorses) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 1 civilization, sent from the Industrial Age. Effect: Hussar: hit points +20%; Hakkapelit: hit points +20%.

Quick answers (3)

Which civilizations have the Finnhorses card?: Swedes.
What does Finnhorses do in AoE3?: Hussar: hit points +20%; Hakkapelit: hit points +20%. The game says: "The sturdy breed of Finnhorses improves the hitpoints of Hussars and Hakkapelits."
What is the tech ID of Finnhorses?: DEHCFinnhorses.

The sturdy breed of Finnhorses improves the hitpoints of Hussars and Hakkapelits.

What it does

Hussar: hit points +20%
Hakkapelit: hit points +20%

Cost: 1
Sent from: IV
Times it can be sent: 1
Game ID: DEHCFinnhorses

In these decks

SwedesIV×1

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