Legal in
Pioneer, Modern, Legacy, Vintage, Penny, Commander, Oathbreaker, Brawl, Historic, Timeless
Rulings (6)
The instant or sorcery card you choose may be one that you just surveilled into your graveyard.
2018-10-05
If you cast a spell this way and that card is exiled, it's considered a new object in the zone it's put into. It won't be exiled if it's put into your graveyard later in the turn.
2018-10-05
Mission Briefing is still on the stack while you choose an instant or sorcery card in your graveyard. Your Mission Briefing can't be to give yourself that same Mission Briefing.
2018-10-05
Mission Briefing doesn't change when you can cast the chosen card. For example, if you choose a sorcery card, you can cast it only during your main phase when the stack is empty.
2018-10-05