Quote Originally Posted by egosum View Post
No, this is not the reason, since you can play conflagrate for 1 from hand, and retaining priority play it for the flashback cost making you inmune to grave hate (beside Leyline/rest in peace, and to fight this you can ply a loner Patrician's sconr, you will ahve it in hand after going off). The most important reason is that you can combo and kill at instant speed with Lightning storm, while this is not possible with conflagrate.

Greetings,

Iņaki.-
If you cast a spell and retain priority, the spell remains on the stack. It will not end up in your graveyard until the resolution of the spell, and therefore cannot be flashed back in the way that you propose.

Graveyard hate should not be any more of an issue than countermagic because of Pact of Negation. Extirpate is the only real worry, and most Modern lists seem to prefer Surgical Extraction for surgical gy hate.