Hanweir Battlements is a rare Land card from Eldritch Moon Promos (PEMN), collector number 204s. Current market price: — (foil $7.11), TCGplayer market prices via Scryfall.
{T}: Add {C}. {R}, {T}: Target creature gains haste until end of turn. {3}{R}{R}, {T}: If you both own and control this land and a creature named Hanweir Garrison, exile them, then meld them into Hanweir, the Writhing Township.