>>45311829Hail needs a buff, it should give a +50% Def to Ice types like how sandstorm gives +50% SpDef to Rock types.
It should also benefit another type. Sun has Fire and Grass, sandstorm has Rock Ground and Steel, rain has Water and buffs Hurricane/Thunder for Flying/Electric. Hail should buff either Ghost or Dark, these types have neither weather nor terrain. Make them not take hail damage and access to Aurora Veil, and a Ghost/Dark type move that gets buffed in hail called Haunting Chill or Shivering Spine or something.
Ice also needs a general buff, should resist two of Grass Ground or Flying