Mystical Tutor [From the Vault: Exiled] Time Spiral Promos Roar of the World is

Roar of the World is in the command zone or on the battlefield

You may cast any number of spells from among cards exiled this way without paying their mana costs

Set: Scars of Mirrodin Type: Artifact Creature — Construct Rarity: Rare Cost: {5} {T}

Target opponent loses half their life

Set: Amonkhet Invocations Type: Sorcery Rarity: Mythic Cost: {3}{W} Destroy all lands

Mystical Tutor [From the Vault: Exiled] Time Spiral Promos Roar of the World isSet: From the Vault: Exiled Type: Instant Rarity: Mythic Cost: {U} Search your library for an instant or sorcery card, reveal it, then shuffle and put that card on top. The student searches the world for meaning. The master finds worlds of meaning in the search.