snowgrave
Warning: spoilers for Deltarune Chapter 2 ahead!
SnowGrave is an extremely powerful ice spell that can be used by Noelle in Deltarune Chapter 2. More specifically, it is unlocked and used on the Weird Route (often known as the SnowGrave Route, it is also called the Command Route or Genocide Route). Labelled simply "Fatal", the spell is less infamous for its immense damage than it is for the method needed to unlock it.
To unlock SnowGrave, Kris must go out of their way to desensitize Noelle to violence, using her IceShock spell to kill every single enemy she encounters. They must also use various emotionally manipulative tactics to bind her to their will, effectively molding her into a pitiless machine who follows any given order and kills on command. Afterwards, Noelle must acquire and wear the Ring of Thorns: a weapon that is painful to wear, but reduces all tension point costs by 50%. SnowGrave costs 200 Tension Points to cast - twice as many as it it possible to have in the first place - making Snowgrave unusable without it.
Once Snowgrave is unlocked, Noelle must be pressured into using the spell on Berdly. Regardless of how much health he still has, Snowgrave will defeat him instantly, completely encasing his Dark World body in a huge chunk of ice. Upon returning to the Light World, Berdly is found completely unresponsive and very likely dead, and Noelle is struggling to convince herself that Berdly is just sleeping, and that everything that happened was just a dream.
Use this tag for pictures depicting Noelle casting the namesake spell or pictures based on the SnowGrave Route in general. On a wider extent, pictures with Kris commanding Noelle to "proceed" or perform actions against her own will can also be considered related.