Cryo
Cryo is the element of ice.
General Info
Cryo is generally used as either a DPS or reaction support element. Frozen is a very useful for crowd control, Superconduct massively boosts physical damage. Melt is used by characters like Ganyu to deal massive damage.
Blizzard Strayer
Blizzard strayer is really useful with cryo characters as it boosts their Damage and crit rate. It is heavily reliant on the Frozen reaction, so it is best used with Hydro teammates.