Just a list of ideas for leg consumables to give the legendary mats more uses. There was a different list of suggestions in the old channel, but I don't remember most of them, so I'd encourage readers with other ideas to leave them on this thread.
• Divine justice: either outright eliminates or reduces the HP and armour of ONE (1) enemy unit by 90% for 3 seconds to make it easy to eliminate. (Think enemy catapults or centurions) (Based on the AoM godpower "Lightning") (5min cooldown - Age 2 required)
• Chronos's Slumber: adds 5 minutes to any time limit on quests. (Single use per quest? - Age 4 required)
• Vitruvian Order: summons 3 engineers. (5 min cooldown - Age 3 required)
• Hermetic Order: summons 3 clinici.(5 min cooldown - Age 3 required)
• Daedalus's gift: summons 5 ballistae.(5 min cooldown - Age 4 required)
• Flutter's fury: summons 8 blade charriots (5min cooldown - Age 3 required) 
• Huginn and Muninn: summons 2 invulnerable seer ravens that last twice as long as the MS days ones. (5min cooldown - Age 2 required)
• Cornucopia: grants the player 1.000 units of each resource, as a weaker version of Resources of the empire (suggested by MusicTopia) (5min countdown - Age 1 required)
These are good points Andrés. I’m sure everything will be strength tested to ensure consumables remain fun boosts to the game.