Hero Skill White dragon Scales

By using 2 heroes' skill points the hero Has white scales covering portions of their body. This allows the player to increase their ac by 7 until the start of the next turn if you arent wearing armor or light armor and have immunity to cold damage until the start of the next turn. The player can use a bonus action or a reaction to activate this skill.

when the party has acquired all 3 of the white dragon skills each hero may activate them on reaction giving the partial power of an adult white dragon to one of the members who have these skills.