Card idea: The Sweeper (Vampire)

Nice idea, but I would say it's overpowered. For 4 cap OBF ani without specials is fine and proposed special is very good. "Big drawback" (-1 intercept) you've mentioned is not drawback almost at all for a minion that will never try to block, so it's not enough to balance his specials. Additionally, - 1 intercept drawback should have some background explanation (like for Daughters). I think as a 5 cap with no drawback it would be better balanced.

It should be up to 3. It should be hunt action.

Recursion is a strong mechanic. This special totally shuts down the recursion of any methuselah. To almost completely shut down a strong mechanic with a cap 4 is too good of a special.

If you dislike recursion mechanics and would like a card to counter it you can't make it too strong unless you want to remove recursion completely. Removing any mechanic completely impairs creativity, which I think we agree on is a bad thing.

Make this vampire a cap 10 or something and add some fun disciplines (including fortitude) and you could make an archetype which is strong against recursion but is limited to that vampire's disciplines (and possibly some other drawback).

And as someone already pointed out, decrease intercept is only a drawback if you intend to block. Likely, you'll be wanting to do actions with a vampire with superior OBF so he'll be tapped and if you want to block with wakes you'll do it with another vampire.

I like the idea.

It should be 3 cards at random so it doesn't completely shut down card recursion.

As a reminder, actions against methuselahs are not directed, meaning that both prey and predator may block it (thus the +1 stealth to counterbalance it).

I'm pretty sure actions against Meths, such as bleeds are directed actions. Anything targeting something I own, including my ash heap, is directed at me. His special would be directed.

It should be a +1 stealth hunt action.