Any player may cast creature spells with converted mana cost 3 or less without paying their mana costs and as though they had flash.
Metagame: appears in 5 decks (0.7 %)
If creature with X in its cost is cast this way, X can only be 0.
You can’t choose to cast a creature as though it had flash via Aluren and still pay the mana cost. You either cast the creature normally, or via Aluren without paying the mana cost.
The mana cost of the creatures being cast is still the stated cost on the card, even though you did not pay the cost.