| Opponant Size | Hits Heart on |
|---|---|
| Tiny | 16+ |
| Small | 17+ |
| Normal | 18+ |
| Large | 19+ |
| Gigantic | 20 |
After hitting a heart, even if the save is made, the dagger gains +1 damage for 5mrs, the otherwise white light turns red gradually turning white again over an hour & the dagger starts a low frequency whistle which increases in volume every time it hits a heart in the same melee and reduces in volume over a like time afterwards.