Tactician's Crown

tactician

Your team gains +1 maximum team size.

10% chance to drop 1 gold when you win combat.

...the Heart of a hero...

Source

Tactician

Recipe

What grants Tactician's Crown

Coronation

Tactician's Crown enables

Gold

Gold is the player-level economy resource.
Team Size

Team Size is the cap on how many champions you can field on the board at once.