Cumulative upkeep {1} (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.)
All creatures get -1/-0.
{1}{G}: All creatures get -1/-0 until end of turn.
"I breathed deeply, and suddenly I knew not who or where I was." —Taaveti of Kelsinko, Elvish Hunter