Deltamine is a minecraft mod that aims to add deltarune themed tools and weapons to minecraft including right now:
The Devil's Knife, Jevil's Scythe a powerful scythe that can create card themed projectiles (Aces, Spades, Clubs, Diamonds) to harm entities and other players.
LMB: Chaos curse. Apply a temporary status effect that marks an entity making your next special attack more powerful.
Right Click: Metamorphosis. Turn into the Devil's Knife and damage any entity you come in contact with.
Right Click + Chaos Curse: Two sets of 4 Devil's Knives will be fired against any entity that was marked.
Spade mode:
Z: Spade teleportation. Teleport 3 times around an enitity firing increasing sets of spade bullets.
Z + Chaos Curse: More teleports and even more spade bullets.
X: Spade bombs. Raind down from the sky in an area near you spade bombs that after a few seconds explode into a circular set of spade bullets.
X + Chaos Curse: Extra spade bombs rain down directly onto any entity that was marked.
C: Spade Ring-around. A circle of Spades surrounds the enemy entity before two rounds of spade bullets aim onto them.
C + Chaos Curse: After the first two rounds of spade bullets the circle of Spades re-appears and a double set of spade bullets attacks the entity along with the circle remaining for a few seconds afterwards.

