Mara, Demon Of Desire

Menace, Lifelink, Shroud
{x}Sacrifice Mara, Demon Of Desire: Create an
X/X Golden Castle artifact creature token with
Defender and, "When this dies, add X mana of
any color. Until end of turn, you don't lose this
mana as steps & phases end."

"The lone Asura asked the meditating ascetic which
of their three daughters he found most pleasing, but
all Siddhartha saw were serpents in the grass..."
- Valmiki