General DiscussionArc Warden 7.03 +250 spark dmg - Sorcerer build? NecroBook Resurrection?

Hello.
Ok so new update is released - what item/ability build you should go if you want to try this 25lvl talent? (They should add scepter thing for this- two sparks in one cast ;] )
It is 530 magic dmg - 25% base magic reduction = 397.5 magic dmg per one spark in late game.

You can buy aether lens (in late game xd) - for 5% spell aMP and 200 cast range - that means 424dmg
or maybe Veil - 25% its hard to catch smbd with veil+spark... but this would do 530 dmg...

but in late game they can buy pipe, bkb, hood - they gain a lot of hp, antimage has that passive shield... so wait, what is the point of picking this talent instead of 30% lifesteal?

even if you cast 2x maxed talent and spark in late game, and you will be able to catch somebody with that, you will deal less than 800dmg:
- 800 dmg to weak support with no items
- 682 dmg when support has got cloak 15%
- 477 dmg when they have got hotd 30%
- 238,5 dmg when they activate hotd/pipe and block one spark
- you can take away -10% to dmg above if there is someone with pipe around.

What is the point of that? Is it just an addon to your right click build (which won't change the game), not for support-mage build?

I see that valve desperately force people to use other combination of abilities than 1,3,1,3,1,6... and added 80 mana cost for magnetic field instead od 110. I see few people used it as a 4lvl choice - what do you think?

Maybe mask of madness (they added +20 more attack speed) +magnetic field + 25 AS talent= right click desolator pusher with boots of travel? Maybe this will be a resurrection of an old build with necronomicon?
The good thing they added 2 seconds to his ultimate - always something.
I see that Arc has 1,96%+ winrate this week - maybe he will jump out from the niche heroes?