Name:Bontu's Last Reckoning
ManaCost:1 B B
Types:Sorcery
A:SP$ DestroyAll | Cost$ 1 B B | ValidCards$ Creature | SubAbility$ DBNoUntap | SpellDescription$ Destroy all creatures.
SVar:DBNoUntap:DB$ Effect | StaticAbilities$ DontUntap | Triggers$ RemoveEffect | SVars$ ExileEffect | Duration$ Permanent | Name$ Bontu's Last Reckoning Effect | SpellDescription$ Lands you control don't untap during your next untap step.

SVar:DontUntap:Mode$ Continuous | EffectZone$ Command | AffectedZone$ Battlefield | Affected$ Land.YouCtrl | AddHiddenKeyword$ This card doesn't untap during your next untap step.

SVar:RemoveEffect:Mode$ Phase | Phase$ Untap | ValidPlayer$ You | TriggerZones$ Command | Static$ True | Execute$ ExileEffect

SVar:ExileEffect:DB$ ChangeZone | Defined$ Self | Origin$ Command | Destination$ Exile 
SVar:Picture:http://www.wizards.com/global/images/magic/general/bontus_last_reckoning.jpg
Oracle:Destroy all creatures. Lands you control don't untap during your next untap step.