Spell Shield active component

It seems like a cool idea, but I'm not sure about the mana leak %. If that happens every spell cast it is a lot of mana to lose. At level 4, about 2 spell casts will deplete the enemy mana pools entirely. Although I know this skill is to make Anti Mage more up close and in the action, it seems like a bit too much. And with the added 50% magic resist, it makes spellcasters useless, also, take not of the duration and cooldown on level 4, that means it is a spammable spell, and with a very low mana cost. It is a nice idea, I feel that nearly half of an enemies mana pool gone in 1 spell cast seems too much. But maybe I'm wrong. If you could correct me with anything that would be cool. Also what skill would this replace? Or would it just be an added skill so he would now have 5?

The CD numbers can be tweaked. This has been discussed on PlayDota. Everyone were and are posting about Anti-Mage, Spell Shield to have an active component. So I came up with this, I posted it in a comment and then I made a thread on my own about this on PlayDota. No the spell is the same. It gives MR and you can activate it so that anyone who casts a spell on Anti-Mage % mana of their mana leaks away. Just like you said. It's to make spell casters useless around Anti-Mage. Because when Anti-Mage enters a game everybody focuses on him.

Like everyone has already mentioned, the numbers are too big. My suggestions:

Make it activate only when hit by single target spells. If enemies are so discriminatory to target you with their spell, then they should pay the price.

Make the mana burn a flat amount, not a percentage. I suggest 100/150/200/250 per spell. Even with the scaling down of this spell, it is still a huge amount, especially for heroes with a low mana pool, and this would force them to increase their total mana by buying some stats. Anti-Mage can impact the item choices of his opponent without being too imbalanced now. Intelligence heroes or heroes with large mana pool are gonna cause some trouble, but 250 mana lost is still not funny at all.

Decrease the magic resist a little. You already have a mechanism to prevent spells from flying towards you, so you don't need that much resistance. 20/25/30/35% is a good amount, I believe.


OR you could make it a passive that activates like Unstable Current. Once the mana burn amount is decreased to about 60/90/120/150, I think it should be balanced.

Its a pretty cool idea, and would **** up heroes like tidehunter massively.

There would be a weird interaction with BKB on antimage though. If he has BKB activated and is hit but not affected by ravage for example will he still apply the mana 'leak' to enemies?

And does it break after one instance of damage or does it stay the whole duration?
It would be thought about a lot since the spell could be quite gamebreaking.