The Primordium does not speak through words but through floods of feeling. The bounds of its mind seem endless. It’s no wonder that the ultimate split of the Primordium created a varying number of personalities, not the least of which are my friendly Morsels.
Plink is a strong early card in fights where there are lots of 1 enemies, frequently killing 2 enemies and generating 2 morsels against waves of Clergymen. However, 1 enemies are not common past Ring 4, and not all battles before that will have many good targets for this spell. Taking the Armor Emblem trial will make Plink a lot less effective as well, often even if it is upgraded. On the other hand, Plink is quite effective on early turns if Mark of Invasion is taken.
Without either a Surgestone, Powerstone, or some other source of Magic Power, this spell is therefore a high purge priority.
See: Version History
In Dev streams, Plink was revealed as a 1 damage to all enemies card with the same slay effect, but was nerfed before introduction in Friends and Foes.