Manual of Martial Techniques

Trinket equipment — Common

Your Moon'ariu Senseis have, "Deathcry - Target troop you control gets one of the following at random: Crush; Spellshield; or Steadfast."

Changes: Moon'ariu Sensei
Slot: Trinket
Rarity: Common
Set: Shards of Fate
How obtained: Frost Ring Arena

What it does is the game's own text; how it was obtained is from the owner's records.