I would say that it would be a +11 and 1d8+7 if the quarterstaff is magical. Also for the Nature Domain you would get to add 1d8 to the damage roll because of Divine Strike.

So the spell description says you CAN use your spellcasting ability for attack and damage rolls... Could you choose to still use your Strength instead? I want you all to imagine a fighter with the magic initiate feat (character is also a chef) using a big wooden spoon as an improvised club when answering this question.

It says "can", not "must", so yes, you can still use your Strength.

Fun fact: a monk/druid/hexblade/battle smith can choose between Strength, Dexterity, Intelligence, Wisdom and Charisma when attacking with a shillelagh:

• Anyone can use Strength with a club or staff
• A club or staff is a monk weapon, so a monk can use Dexterity
• A shillelagh is a magic weapon, so a battle smith can use Intelligence
• If cast as a druid spell, it allows the caster to use Wisdom to attack with it
• If they bond with the weapon using their Hex Warrior feature, they can use Charisma with it (it's not two-handed)

Hell yeah! Now if only we could find a way to attack using our Constitution modifiers...

"Shill-lay-lee"

Quote from Garick >>

Hell yeah! Now if only we could find a way to attack using our Constitution modifiers...

 Give it time, someone will figure that out eventually as well.

Casting word is:

Incanticus Infusium

If you read the spell you would have the answer.

Quote from Jeremy_the_Graten >>

Where's the pronunciation button for this spell?

 I know this comment is years old, but spells don't have pronunciation buttons

Rip Two Weapon Fighting with Wisdom Stat. I guess it will only be Pact of The Blade Hexblade Warlocks with Charisma.

Quote from rmdeming >>

 Hypothetical: Level 11 Nature Cleric, +4 proficiency bonus, +5 WIS, +2 Quarterstaff. Does casting this spell yield a to hit bonus of +9 or +11 and 1d8+5 or 1d8+7 damage?

 +11 and +7. It replaces the damage dice to a d8 and makes it magical. It doesn’t replace any other properties.

does this work with a greatclub and great weapon mastery?

Shi (as In Shit) Leigh (as in sleigh) x2

Quote from Jeremy_the_Graten >>

Where's the pronunciation button for this spell?

 
You just sneeze.

Quote from HopeFox >>

It says "can", not "must", so yes, you can still use your Strength.

Fun fact: a monk/druid/hexblade/battle smith can choose between Strength, Dexterity, Intelligence, Wisdom and Charisma when attacking with a shillelagh:

• Anyone can use Strength with a club or staff
• A club or staff is a monk weapon, so a monk can use Dexterity
• A shillelagh is a magic weapon, so a battle smith can use Intelligence
• If cast as a druid spell, it allows the caster to use Wisdom to attack with it
• If they bond with the weapon using their Hex Warrior feature, they can use Charisma with it (it's not two-handed)

 So if I was a genasi, I can use constitution as a spell casting modifier

+11, 1d8 +7

the spell is bad. i have it buffed to be able to use any weapon and it scales since druids don't get multi-attack.

this alongside circle of spores makes druids decent frontlines with melee damage, while still being able to cast spells.

Quote from Leo_Ness >>

I allowed the druid to use her spear for this in the future. Will this have significant negative consequences?

 yes. you should just go ahead and tpk and start a different campaign, and then never ever ever buff a useless spell in the game ever again.

This cantrip needs spell scale leveling, no if's, and's, or buts. Even a simple additional +1 at certain levels would make this more viable for play, otherwise you need to either take magic initiate with a melee class or multiclass out of druid. It seems like an oversight that a damage cantrip doesn't scale with levels and having to homebrew it out of impotence is just lazy on the writers part.

Who are my Tomelock Shillelagh Polearm Master peeps? Tomelock best 'lock!