"[Auto]
Square
This card appears.
If you have 4 or more [Metal Fortress] in your Resource, reveal 4 cards from the top of your deck, choose a [Metal Fortress] among them, add it to hand, return the rest of revealed cards back to deck, shuffle the deck, and choose one of your [Metal Fortress] in Square, until end of turn, give it following ability. " [Always] Absolute Boundary (This card cannot be chosen as target for card's effect by anyone.)""