Shillelagh: Transmutation cantrip. Cost: Bonus Action. Learnable classes: Druid, Cleric.

Shillelagh

Transmutation cantrip

Your staff or club becomes magical: it deals [1], and uses your Spellcasting Ability for Attack Rolls.

Bonus Action

Learnable classes

DruidCleric

[1] marks a value that depends on character level.