Ode to Everblooming Crimson

At the beginning of your upkeep, you may choose
one —
• {b}{b}, Look at your opponent's hand, choose a
card and exile it.
• {g}{g}, Search your library for a card, exile it. Shuffle.
When Ode to Everblooming Crimson leaves the battlefield, you can cast all exiled cards by this enchantment without paying their mana cost.
{5}{b}{b}{g}{g}: Sacrifice this enchantment.