What does Vlach Banner do in AoE3?

Ships 2 Boyar per Polish Banner Stable Count; Boyar: becomes available. The game says: "Sends 2 Boyars for each Folwark and Stable. Enables them in Stables with a build limit."

Home City card

Vlach Banner

Vlach Banner (tech ID DEHCBannerBoyar) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 1 civilization, sent from the Fortress Age. Effect: Ships 2 Boyar per Polish Banner Stable Count; Boyar: becomes available.

Quick answers (3)

Which civilizations have the Vlach Banner card?: Poles.
What does Vlach Banner do in AoE3?: Ships 2 Boyar per Polish Banner Stable Count; Boyar: becomes available. The game says: "Sends 2 Boyars for each Folwark and Stable. Enables them in Stables with a build limit."
What is the tech ID of Vlach Banner?: DEHCBannerBoyar.

Sends 2 Boyars for each Folwark and Stable. Enables them in Stables with a build limit.

What it does

Ships 2 Boyar per Polish Banner Stable Count(unit)
Boyar: becomes available

3 further effects (interface, visuals or AI) not listed.

Cost: 6001
Sent from: III
Times it can be sent: 1
Game ID: DEHCBannerBoyar

In these decks

PolesIII×1

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