Tool's last blow

What if when any tool it's at it's last 1 hp of use and it has a high chance of efficiency and luck for each kind of tool/weapon.

Examples:

[Sword, trident and bow]: gets a high crit chance and damage dealt rises

[Shovel & hoe]: chance of get any kind of seed

[Axe]: chance of getting extra wood

[Fishing rod]: high chances of get rare items

And for balancing most of these their material would have different percentages.

Wood: 1%

Stone: 5%

Iron: 30%

Gold: 60%

Diamond: 95%