Component Collector 
Creature — Homunculus
If it's neither day nor night, it becomes day as this creature enters. Whenever day becomes night or night becomes day, you may tap or untap target nonland permanent.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL