Storm Power:
You gain a bonus to the damage rolls of arcane powers equal to your Dexterity modifier. The bonus equals your Dexterity modifier + 2 at 11th level and your Dexterity modifier + 4 at 21st level.
Storm Soul:
You gain resist 5 thunder and resist 5 lightning. This resistance increases to 10 at 11th level and 15 at 21st level.
While this resistance is active, your arcane powers ignore all targets’ resistance to that damage type up to the value of your resistance.
If you are hit by an attack, you can end this resistance as an immediate interrupt to gain a +4 power bonus to all defenses until the end of your next turn. If you do so, the resistance returns after you take a short rest or an extended rest.
Storm’s Embrace:
When you roll a natural 20 on an attack roll for an arcane power, wind surges around you and your enemy. You can push the target 1 square and then fly a number of squares equal to 1 + your Dexterity modifier after applying the attack’s other effects.