Imposter

Dwarf territory: Dwarf treasure hoard 131,131, no access. Watermill 121,95, no access. Mage territory: Golem forge 31,133, no access. Elf territory: Ent grove 71,21, no access. Dark Elf (Vaishan) territory: Crystal of Revelation 31,25, no access. Dungeon Outpost 26,6, no access. Dungeon: resource corner 30,50, guarded by T7, no access (blocked).

Spoiler

The Guardian's tent (green) is well hidden. Keep in mind that Vaishan will likely have a full dragon set by the second week. But he only has one castle. So, my advice is not to delay and sail to the lower right corner.