The Sword-bearer, Liuva

The Sword-bearer, Liuva costs {x} less to cast
where {x} is the number of non-land permanents
each opponent controls and loses indestructible
whenever {x} is 6 or less.
Indestructible, Shroud
{t}: Attach target Aura or Equipment you control
to The Sword-bearer, Liuva and remove all other
enchantments and artifacts attached to it.
"This world deserves suffering in kind.
Nothing will remain."