Darksteel Colossus

Artifact Creature - Golem 11/11, 11 (11)
Trample

Darksteel Colossus is indestructible.

If Darksteel Colossus would be put into a graveyard from anywhere, reveal Darksteel Colossus and shuffle it into its owner's library instead.¹
Illus. Carl Critchlow

Gatherer Card Rulings [Nov 2009]

• 10/1/2009: Lethal damage, damage from a source with deathtouch, 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 or if its toughness is 0 or less. (In these cases, of course, Darksteel Colossus would be shuffled into its owner's library instead of being put into its owner's graveyard.)

Format Legality	Legal in Vintage, Legacy, Extended, Standard, MTGO Classic
Printings (2/17)	Magic 2010 (Mythic Rare) Darksteel (Rare)