These Sirens have used the freezing of Hell to their advantage, enchanting their blades with ice to damage their enemies more deeply. They lack formal training in classical combat, but make up for it in their magical prowess.
|Strengthstone is effective on units with Coldcaelia affixes because its 1 doesn't kill most enemies even at Ring 3 or 4. Usually the additional +10 Attack bonus allows Coldcaelia to kill all weak enemies in the back ranks of the floor. Even if you do not plan to use Coldcaelia to kill backline units, some way of boosting is crucial on this unit against Seraph the Temperant whose Sap otherwise shuts Coldcaelia down.|
|Speedstone is effective on Coldcaelia if you also have a way to boost to let it kill the lower health enemy units on the floor before they have a chance to attack.|
|Frenzystone is effective on Coldcaelia because its Strike ability is triggered for each attack, making it much more effective at killing bosses.|
|Battlestone is effective on Coldcaelia for a similar reason that Strengthstone is, letting it kill most back line enemies, while also making it harder for Sweep or Spikes on enemies to pick it off.|
|Heartstone is worth considering for taking the Retribution Trial, though Coldcaelia still probably dies soon in those battles unless you have a different way of taking out backline enemies on a lower floor.|
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