Solemn Vow's

Cumulative upkeep: {1}(At the beginning of your upkeep, if this permanent is on the battlefield, put an age counter on this permanent. Then you may pay {1} for each age counter on it. If you don't, sacrifice it.)
{t}: Add one mana of any color to your mana pool for each permanent you control.
"In sickness and in health, till death do us part."