a finger snap that poofs and turns someone into that tf2 cow cutout.

something reasonably similar is already planned!

A weapon that creates a damaging ring around yourself for as long as you hold down the button as a sort of melee stand in. It would reward good use of the movement system by letting you kill anything you touch at the risk of needing to get close to enemies. Maybe as an incentive to use it over the bricks it'll heal on kill.

Nuclear bomb (legal)

close-range aoe damage is a good idea...

legal nuclear bomb is ALSO a good idea but the niche feels filled by neutron star shard? i'll think about it!

Wizard SMG that will shoot 20 rounds per second with 40 damage. Rightclick will charge an explosive shot that will dead 500-1500 damage. The ammo in one clip will be 500. Weapon will be capable of destroying striders, combine helicopters, gunships and other armoured things like that. You can change stats if you want to.

a blue square that absorbs bullets when left click is held and then fires them back stronger when released. maybe right click could also do something??? idk

actually since lightning caller is already blue, maybe it could be green?

Energy beam that does 0 damage at close range but scaling up to 500 damage per hit, with perfect accuracy and piercing but that has a painfully tiny hitbox

Wizard SMG is a pretty good idea... alt-fires are a good call! I'll think about that!

Shield is on the table! Thanks for the input!

Range-damage energy beam seems interesting... But a lot of wizard engagements happen at high range, so I'll test this out...

For the energy beam idea you could take a page from terraria's "last prism" weapon and have it be multiple small low damage lasers that start spread out very far in a cone in front of you and converge onto a single point as they are fired continuously combining all of their damage and focusing it.

A bullet that stays in your hand and shoots out upon click, bouncing to headshot all nearby enemies (cast 9mm)