Quote Originally Posted by eao View Post
I understand the the draw 7 effect of Griselbrand is treated as 7 distinct draws so that each draw may be taken from the library or replaced for a dredge. One thing I'm curious about is how the draw 7 is represented on the stack and whether you can cast instants or activate abilities between the draws. For example, if I've already dredged 3 cards using Griselbrands ability (meaning I have another 4 draws) can I use Phantasmagorian to dump my hand back into my graveyard to use for my remaining Griselbrand draw/dredges? I want to say yes but I can't point to anywhere in the rules where this is addressed.
You can't do other interaction then draw 7 times. Like draw, draw, draw, draw, draw, draw, draw. The only thing is replace each draw by dredge. And do that for each draw induvidually. But no interference until the draw seven is completely resolved. You can, however, choose to return a dredger to your hand that was put in the graveyard during a previous draw from the same resolving draw 7.