Amethyst Aegis
Pros:
- Gets to the coveted 90% defence like Spirited Tiger.
- Most reliable applier for Crystallize as of writing this which gives a small niche over Spirited Tiger.
- His 20% bonus block chance can be a slight help against ranged units and Dwarf Engineer.
- Main weakness right now is just that Spirited Tiger exists and Aegis's utility besides Crystallize revolves around block and removing block from enemies (which isn't as useful in a mage heavy game).
- Obviously, run full defence.
- PvP and adventure. (Don't think that his Crystallise is enough to make him viable in Ancient or Giant Hunt modes.)
- His skill to increase crystallise radius and increase defence are the most important, so I'd put him maybe mid on investment. Technically cheaper than Spirited Tiger but you want to really focus on Spirited Tiger.