Portent from Lost Grimoire doesn't prevent knockback damage.

Reproduction Steps:
1. Deploy a champion.
2. Equip Lost Grimoire.
3. Gale it.
4. The knockback damage will be fully applied even though it's coming from a single source.
5. This is inconsistent as any other ability and spell in the game that goes above 10 damage will get reduced by 5...except for this apparently.


@Sokolov

 

Pretty sure its multiple stacks of 5.

 

Nope, shows up as a single number of 15 or 10.

 

The ability failed to work for me today against a match vs Nep, where he galed a champ with portent against a font.