Explain plz valkyrie skill

explain to me plz 3rd skill of valkyrie, she has red\yellow, but bonus blue mana.

Given she cannot do any damage herself, she is really set-up to power up another character(s) that uses blue mana.

Common examples: Druid, Behemoth, Sheggra’s Heart, Webspinner, Slime…

she gives blue allies +1 gem ?

No. For every 3-gem match, your team gets credited for 4 blue mana. Similarly, for a 4-gem match, your team gets credited for 5 blue mana.

To add to this. The blue match doesn’t even have to come from Valkyrie’s transform skill.

Thank you very much !

It acts exacly as a +1 blue mana from a blue banner