Phyrexian Altar

Sacrifice a creature: Add one mana of any color.
"On one of our adventures, Rick and I basically
destroyed the whole World So, we bailed on
that reality, and we came to this one.
Because in this one, the world wasn't destroyed.
And in this one, we were dead. So we came here,
a-a-and we buried ourselves, and we took their place.
And every morning, Summer, I eat breakfast 20 yards
away from my own. Rotting. corpse."