Solar Deprivation

Enchanted land has shroud. (It can't be the target of spells or abilities.)
Enchanted land has "{2}{u/b}{u/b}, {t}: You can't use
this effect the turn after you used it last. You can put
a blue/black hybrid 5/6 Horror creature with
menace and "When this creature enters the
battlefield, scry 3. All other creatures don't
untap during the next untap step." onto the
battlefield. Only after these effects resolve,
Add {u} or {b} to your mana pool."