What does 4 Advanced War Canoes do in AoE3?

Ships 4 War Canoe; War Canoe: hit points +20%. The game says: "You get some War Canoes, plus all of your War Canoes get increased Hit Points."

Home City card

4 Advanced War Canoes

4 Advanced War Canoes (tech ID HCXPShipWarCanoes3) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 2 civilizations, sent from the Industrial Age. Effect: Ships 4 War Canoe; War Canoe: hit points +20%. It hands over about 1,000 resources' worth.

Quick answers (3)

Which civilizations have the 4 Advanced War Canoes card?: Haudenosaunee and Lakota.
What does 4 Advanced War Canoes do in AoE3?: Ships 4 War Canoe; War Canoe: hit points +20%. The game says: "You get some War Canoes, plus all of your War Canoes get increased Hit Points."
What is the tech ID of 4 Advanced War Canoes?: HCXPShipWarCanoes3.

You get some War Canoes, plus all of your War Canoes get increased Hit Points.

What it does

Ships 4 War Canoe(unit)
War Canoe: hit points +20%

What it hands over

4 × War Canoe250 each

Total ≈ 1,000 resources — units at their train cost, crates and animals at what they hold.

Some civilizations get a different version of this card; the numbers above are the base card.

Cost: 1
Sent from: IV
Times it can be sent: 1
Game ID: HCXPShipWarCanoes3

In these decks

HaudenosauneeIV×1

LakotaIV×1

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