Send 1 "Stardust" monster from your Deck to the GY, or if you control "Stardust Dragon" or a Synchro Monster that lists "Stardust Dragon" in its text, you can Special Summon it instead. You can banish this card from your GY, then target 1 "Stardust" monster you control; increase or decrease its Level by 1 until the end of this turn. You can only use each effect of "Stardust Illumination" once per turn.