Leyline of the Void and Bounce

[Skeggi]

My opponent has Leyline of the Void in play. I bounce it with a spell. Will my bounce spell be exiled or placed in my graveyard?

[luma]

First, your spell bounces Leyline of the Void. Then the spell card is put into your graveyard, because Leyline isn't on the battlefield anymore.

[Skeggi]

So what happens with Lightning Bolt on a Tarmogoyf with only a Land and a Sorcery in the graveyards?

Basically what I'm asking; why does the Tarmogoyf live and why is the bounce spell put in the graveyard?

[Maveric78f]

Because Lightning Bolt does not destroy Tarmogoyf. Damages caused by Lightning Bolt might cause the destruction of Goyf as a State Based Effect. As a summary, any creature dealt damage with lightning bolt will go the grave only after the resolution to the spell, when SBE are checked.

[citanul]

What Maveric sais is correct.

No state based effecst get checked during the resolution of a spell. At the end of the resolution Lightning Botl will go to the graveyard and only then will state based effects be checked.
Tarmogoyf's P/T is defined by the cards in graveyard and so it will count the bolt.

On the other hand, if you would play StP in the same situation you would only gain 2 life and not 3 because the lifegain happens during resolution before Swords to Plowshares goes to the graveyard.

[Skeggi]

Oh right, I understand:

Lightning Bolt is on the stack, it resolves: Goyf has 3 damage and Bolt is in the graveyard. Now SBE are checked and sees Goyf is a 3/4.

Bounce is on the stack, it resolves: Leyline of the Void is returned to hand and the bounce sees no reason not to go to the graveyard.