If damage would be dealt to another creature you control, prevent that damage. Put a +1/+1 counter on that creature for each 1 damage prevented this way.
When Heralds of the Shredder is put into a graveyard from anywhere, shuffle it into its owner's library.
![Heralds of the Shredder - Vigor (Surge Foil) [TMC - 53] - Cartes Sportives Rive Sud](http://cartessportivesrivesud.com/cdn/shop/files/heralds-of-the-shredder-vigor-surge-foil-tmc-53-magic-the-gathering-singles-9171270-8369145_{width}x.jpg?v=1775268186)
![Heralds of the Shredder - Vigor (Surge Foil) [TMC - 53] - Cartes Sportives Rive Sud](http://cartessportivesrivesud.com/cdn/shop/files/heralds-of-the-shredder-vigor-surge-foil-tmc-53-magic-the-gathering-singles-9171270-8369145_1024x.jpg?v=1775268186)