Yeah, I was looking around and found a few that might give us something to work with<br/><br/>3rd ed core book has this one, but its a Fire stone<br/>Gem of Endless Summer (Greater)<br/>Keywords: None<br/>The presence of this hearthstone warms the land and air around it to the temperature it would normally assume in the height of summer. Both day and night time temperatures mirror summer equivalents. This effect extends for four miles around the stone and ends abruptly at the edge. If someone moves the stone, the warmth moves with it, but snow and frozen ground thaw only as fast as they would if exposed to normal summer temperatures. The effect extends several yards down into the soil, allowing normal plant cultivation in the frozen depths of a northern winter.<br/><br/>Oadanals Codex has this<br/>SONG OF LIFE STONE (MANSE ••••)<br/>At will, this sphere banded with brown and white forces plants to grow with unnatural speed and vigor anywhere within the sound of the bearer’s voice. Trees put out leaves, flower and bear fruit out of season in the span of an afternoon, while vines and other plants undergo a year’s growth in a single scene. This unnatural growth ceases at the end of the scene, but the affects remain. The stone’s power also brings wilted or dying plants instantly back to full health. It can even restore dead plants to life as long as they are still rooted in the ground. The bearer can fill a barren or ruined field with ripe grain in a single scene and could bless several dozen square miles of land in a day<br/><br/>and there's also this artefact<br/>TRAVELER’S STAFF (ARTIFACT •)<br/>This gnarled staff is a branch from an ancient apple tree found in a powerful Wood demesne on the Blessed Isle. The Empress claimed this demesne as a crownland until a few decades ago, when she awarded it to House V’neef. Only tools of the magical materials can cut this tree’s wood, and only a master of Lore, Occult and Craft (Wood) can preserve the ageless tree’s magic in a staff. A traveller's staff can be used as a normal quarterstaff in combat, but the staff is more useful as a source of food, firewood and shelter. At sunset, the user may plant the staff into the earth and commit 3 motes. The branch then grows into a full-size apple tree that bears enough ripe fruit to feed five people for the evening. If she needs firewood, the owner can use the tree’s branches to provide it—wood gathered this way<br/>burns readily. Come morning, she can find a large, straight branch that easily snaps off—and it becomes the original staff. The tree then dies and rapidly rots away. By sunset, no sign of its presence remains, and the Essence is released to the Exalt who caused it to grow.<br/><br/><br/>If we combine them, maybe something like this<br/><br/><em>Gem of TBD (Greater)<br/>Keywords: None<br/>The presence of this hearthstone warms the land and air around it to the temperature it would normally assume in the height of summer. Both day and night time temperatures mirror summer equivalents. This effect extends for five yards around the stone and ends abruptly at the edge. If someone moves the stone, the warmth moves with it, but snow and frozen ground thaw only as fast as they would if exposed to normal summer temperatures. The effect extends several yards down into the soil, allowing normal plant cultivation in the frozen depths of a northern winter.<br/><br/>It can also produce food bearing plants (fruit trees, vegetables and grains), causing them to spring up from the ground and mature in the space of a single scene. Once created, these plants will continue to grow and flourish normally, assuming conditions allow.<br/><br/>The manse that the stone is from manifests a similar ability, though the effect is in miles rather than yards.</em><br/><br/>Does that line up with what you had in mind?<br/>