Marwallah The Blind

Hexproof, Indestructible, Annihilator 2
Whenever Marwallah The Blind enters the battlefield or attacks, exile X cards from
defending player's library or graveyard. Copy any instants, sorceries or enchantments exiled this
way. You may cast the copies without paying
their mana cost at the beginning of the next
end step.
"I prepared for the aspect of war itself. You think you
stand a chance?"