New item for countering heals/shields

How about releasing a new item like this: Spear of despair 40-60 AD 10% CD Unique passive (Shield cutter):+25-50% dmg to shield scaling from levels 1-18.

Now for the heal counter i have 3 ideas:

1. After damaging a champion he gets grievious wounds for 5 seconds.
2. After auto attacking a champion he can't receive healing for 3 seconds or after damaging a champion he can't receive healing for 2 seconds.
3. After auto attacking/damaging the target champion, (120%) of the healing he receives in the next 5 seconds will be dealt as physical damage. (This could be a passive like dusk blade and could be proked by damaging/auto attacking the target, but could also be a item active)