Phobian Phantasm

Flying; fear (This creature can't be blocked except by artifact creatures and/or black creatures.) Cumulative upkeep {B} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oig9fdaw1pb1hus3akzcc.