How to: Stack triggers with Ink-Treader and enchantments.

GRIP OF CHAOS:
Trigger Grip of Chaos first, then Ink-Treader.
Ink-Treader resolves first, so Grip of Chaos doesn't negate it.

DOVESCAPE:
Trigger Ink-Treader first, then Dovescape.
Dovescape resolves first, creating Bird tokens.
Ink-Treader resolves, using the spell's last known information (since it was countered), and creates extra copies for the newly-created Birds.

POSSIBILITY STORM:
If you want the spell in your hand to resolve first, trigger Possibility Storm, then Ink-Treader.
Ink-Treader resolves first, creating copies of the spell, then Possibility Storm resolves getting you a new spell.
If you want to resolve the spell you get first, trigger Ink-Treader, then Possibility Storm.
Possibility Storm resolves first, getting you a new spell (and hopefully a new Ink-Treader trigger), then Ink-Treader resolves (potentially making more copies if you Storm into Spawning Breath).

EYE OF THE STORM:
When using with Dovescape/Possibility Storm, trigger Dovescape/Possibility Storm first so Eye of the Storm can exile the spell.

For example, casting spell A with Dovescape + Possibility Storm + Eye of the Storm, trigger Ink-Treader, then Possibility Storm, then Dovescape, and finally, Eye of the Storm (unless you don't want the spell to end up in the Eye).
Eye of the Storm resolves, exiling spell A and casting a new copy.
Trigger Ink-Treader, then Dovescape for the copy.
Dovescape resolves, creating some Birds.
Ink-Treader resolves, creating copies of spell A.
The copies of spell A resolve.
Dovescape resolves. Since spell A is exiled, it can't be countered and Dovescape does as much as it can - it creates some more Birds.
Possibility Storm resolves. Again, it can't exile spell A, so it does as much as it can, finding spell B from your library.
Spell B is cast.
Trigger Ink-Treader, then Dovescape, then Eye of the Storm.
Eye of the Storm resolves, exiling spell B and casting copies of spells A and B.
Trigger Ink-Treader for both, then Dovescape for both.
Two Dovescape triggers resolve, exiling the copies and creating a ton of Birds.
Two Ink-Treader triggers resolve, copying both spells. Remember you have to resolve all copies of one spell before starting on the other.
Ink-Treader's original ability resolves, copying spell A for each creature.