Eldrazi Monument

Artifact, 5 (5)
Creatures you control get +1/+1, have flying, and are indestructible.

At the beginning of your upkeep, sacrifice a creature. If you can't, sacrifice Eldrazi Monument.
"Gods don't die. They merely slumber."—Ayli, Kamsa cleric
Illus. Mark Tedin

Gatherer Card Rulings [Nov 2009]

• 10/1/2009: If you control any creatures as the triggered ability resolves, you must sacrifice one. You can't choose to sacrifice Eldrazi Monument instead. You sacrifice the Monument only if you had no creatures to sacrifice.
• 10/1/2009: Lethal damage and effects that say "destroy" won't cause an indestructible creature to be put into the graveyard. However, an indestructible creature can be put into the graveyard for a number of reasons. The most likely reasons are if it's sacrificed, if it's legendary and another legendary creature with the same name is on the battlefield, or if its toughness is 0 or less.

Format Legality	Legal in Vintage, Legacy, Extended, Standard Banned in MTGO Classic
Printings (1/9)	Zendikar (Mythic Rare)