Here is a hypothetical situation I am wondering about:
I have in play a Omnath, Locus of Mana and 500 Green mana in my mana pool.
My opponent plays a removal spell on Omnath (Path to Exile, Doom Blade etc)
In response I play a Vines of Vastwood on Omnath (Vines makes Omnath not targetable).
Rule 114.1 says that:
targets are declared as part of the process of putting the spell or ability on the stack
So Omnath was declared as the target when the removal spell was played. Is it too late then for my Vines of the Vastwood to save Omnath?
Or is there somekind of rechecking of the target before the spell resolves (I could not find it in the targeting rules section.)