Uro, Titan of Nature's Wrath is a 3 mana value with an Escape cost.
Escape—{G}{G}{U}{U}, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)
Aluren allows me to cast cards with mana value 3 or less without paying their mana costs.
Any player may cast creature spells with mana value 3 or less without paying their mana costs and as though they had flash.
Am I allowed to cast Uro, Titan of Nature's Wrath using its Escape ability and use Aluren to negate it's casting cost, requiring me to only exile 5 cards from my graveyard?