Rumia, Dusk Yokai

When Rumia, Dusk Yokai enters the battlefield, it becomes night
{b}{b}{b}: Target creature blocking or blocked by Rumia, Dusk Yokai gets -1/-1 until
end of turn. This ability costs {b}{b} less
if it is night.
If a creature blocked by or blocking Rumia, Dusk Yokai dies, create a food token