Meren's Ace

When Meren's Ace enters the battlefield, shuffle all graveyards into your graveyard. Then, put X Bone counters on another target land you control.
{t}: Add {w}{u}{b}{r}{g}. Use this mana only to cast cards from your graveyard.
{ut}: You may cast X target card from your graveyard this turn.
Ascend: As long as you do not have the City's Blessing, Meren's Ace is not a creature.