Map of the Northern Colonies

Legend of the Five Rings card from Gates of Chaos

Card Type: Item
Force: +0
Chi: +0
Gold Cost: 0
Card Text: Other players' Terrains will not destroy your Terrains at this Item's battlefield.
Focus Value: 3
Legality: A Brother's Destiny (Ivory Edition), Age of Conquest (Emperor)
Deck: Fate
Story: 2012 Kotei Winner - Andrew Gordon

Printings

Rarity: Common
Flavor Text: "I made a few poor quality copies to sell to the Scorpion. They were desperate to see what was in them, and I am curious as to why they showed such naked interest." - Yoritomo Aranai
Artist: Felipe Gaona
Card Number: 92
Publisher: Alderac Entertainment Group

Q: Map of the Northern Colonies reads "Other players' Terrains will not destroy your Terrains at this Item's battlefield."
The Ivory Legal terrains all read "Destroy a Terrain (if able). Put this Terrain into play."
I'm assuming this means the other player can still play their terrain, it just also leaves yours in play? In this case, it would seem like you can play a second terrain, destroy the opponent's, and thus have two terrains in play?
A: It's a lot to go through, but if all the pieces line up as you have laid out, yes. In the example you've provided, you would be left with two Terrains in play. Ben Higgins, "Map of the Northern Colonies vs Ivory Legal Terrains", 7 Nov 2013