Merge branch 'grnmissingcards2' into 'master'

Updated Deck Generation Data - Added Mission Briefing from fsecco on the forum.  Updated to use Surveil rather than dig.

See merge request core-developers/forge!987

forge-gui/res/cardsfolder/m/mission_briefing.txt

@@ -0,0 +1,13 @@
+Name:Mission Briefing
+ManaCost:U U
+Types:Instant
+A:SP$ Surveil | Cost$ U U | Amount$ 2 | SubAbility$ DBChooseCard | SpellDescription$ Surveil 2, then choose an instant or sorcery card in your graveyard. You may cast that card this turn. If that card would be put into your graveyard this turn, exile it instead.
+SVar:DBChooseCard:DB$ ChooseCard | Choices$ Instant.YouCtrl,Sorcery.YouCtrl | ChoiceZone$ Graveyard | AILogic$ CastFromGraveThisTurn | Mandatory$ True | RememberChosen$ True | SubAbility$ DBEffect | SpellDescription$ You may cast that card this turn. If that card would be put into your graveyard this turn, exile it instead.
+SVar:DBEffect:DB$ Effect | RememberObjects$ RememberedCard | StaticAbilities$ Play |  SubAbility$ DBCleanup | ExileOnMoved$ Stack | ReplacementEffects$ ReplaceGraveyard | SVars$ MoveExile
+SVar:Play:Mode$ Continuous | MayPlay$ True | EffectZone$ Command | Affected$ Card.IsRemembered | AffectedZone$ Graveyard | Description$ You may play remembered card.
+SVar:ReplaceGraveyard:Event$ Moved | ValidCard$ Card.IsRemembered | Origin$ Stack | Destination$ Graveyard | ReplaceWith$ MoveExile | Description$ If that card would be put into your graveyard this turn, exile it instead.
+SVar:MoveExile:DB$ ChangeZone | Defined$ ReplacedCard | Origin$ Stack | Destination$ Exile
+SVar:DBCleanup:DB$ Cleanup | ClearRemembered$ True
+SVar:RemAIDeck:True
+SVar:Picture:http://www.wizards.com/global/images/magic/general/mission_briefing.jpg
+Oracle:Surveil 2, then choose an instant or sorcery card in your graveyard. You may cast that card this turn. If that card would be put into your graveyard this turn, exile it instead.