Ogarin, Primal Archmage

Eminence- As long as Ogarin, Primal Archmage is
in the command zone or on the battlefield.
Instants and Sorcery spells you cast have
buyback. The buyback cost is equal to its
converted mana cost.
When Ogarin, Primal Archmage enters the battlefield, instants and sorcery spells in your graveyard gain flashback until end of turn. The flashback cost is equal to its converted mana cost.