Cheapest priced copy (Magic Origins): $0.99 at Card Kingdom, near mint, their price list as of .
Erebos's Titan 
Creature — Giant · 5/5 · Mythic · Magic Origins · #94
As long as your opponents control no creatures, this creature has indestructible. (Damage and effects that say "destroy" don't destroy it.)
Whenever a creature card leaves an opponent's graveyard, you may discard a card. If you do, return this card from your graveyard to your hand.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic Origins | 94 | Mythic | $0.99 | $0.99 |
3 rulings from Wizards of the Coast
- 22 June 2015The last ability triggers only if Erebos's Titan is in your graveyard.
- 22 June 2015In a multiplayer game, the last ability won't trigger when a player with a creature card in their graveyard leaves the game.
- 22 June 2015Damage dealt to a creature with indestructible remains marked on that creature. If Erebos's Titan has lethal damage marked on it and it loses indestructible (perhaps because your opponent controlled no creatures and then gained control of one), Erebos's Titan will be destroyed.