Obelisk of Grixis [Duel Decks: Ajani vs. Nicol Bolas] SWSH278 The Astrotorium bouncing record is

The Astrotorium bouncing record is three days

where X is the total amount of life your opponents have lost this turn

Set: Commander 2011 Oversized Type: Legendary Creature — Dragon Rarity: Rare Cost: {3}{G}{U}{R} Flying

Set: Modern Horizons Type: Creature — Beast Rarity: Common Cost: {4}{G}{G} Trample

but its speaker is

Obelisk of Grixis [Duel Decks: Ajani vs. Nicol Bolas] SWSH278 The Astrotorium bouncing record isSet: Duel Decks: Ajani vs. Nicol Bolas Type: Artifact Rarity: Common Cost: {3} {T}: Add {U}, {B}, or {R}. Like most features of Grixis, the obelisks that remain from the time of Alara now exist only for dark exploitation.