Additionally I would say, though probably not against D&T, given the choice (ie Entomb) going for Girselbrand without protection should be avoided post sideboard. With 4/7 of the targets all the same, a single
Surgical Extraction or worse,
Extirpate truly destroys any followup play. In a situation of no apparent obstacles but an unknown hand, I'd advocate for going for one of the single card threats.
Best case is you land a Grave Titan or equal and it wins you the game, same as Griselbrand would.
Middle case is the are about to counter your reanimate or nix the creature using
Faerie Macabre, but no worse off than if you went with Griselbrand
The point of the exercise, they nuke the target using a Extirpate and you're glad you didn't lose half of your targets.
And then some worse case scenario where they had nothing, the creature got through, but then wasn't enough to close the game because it wasn't Griselbrand, for whatever reason.
Specifically against S&T, Inkwell would probably be my first pick, Grave Titan as a second.