Okay so the character builder didn't have Cosmic Magic as a Spell Source so I just chose Wild because I had to choose out of two, but I want to go with Cosmic so I'm just gonna leave all of the abilities info here so it can be read because some of it will need to be factored in. Obviously we can't change what recently happened in the battle from here on these are the class features I'll run by.
Cosmic Persistence: While you are not wearing heavy armor, you can use your Strength modifier in place of your Dexterity or Intelligence modifier to determine your AC.
Cosmic Power: You gain a bonus to the damage rolls of arcane powers equal to your Strength modifier. The bonus equals your Strength modifier + 2 at 11th level and your Strength modifier + 4 at 21st level.
Soul of the Cosmic Cycle: At the end of a short rest or an extended rest, you choose a cosmic phase from those described below and gain its benefits.
The first time you become bloodied during an encounter, your phase immediately changes to the next higher-numbered phase (or back to the phase of the sun if you are in the phase of the stars). For example, if you begin an encounter in the phase of the moon, after becoming bloodied you would be in the phase of the stars.
In addition, each time you use a daily arcane attack power, you can choose to change your phase to the next higher-numbered phase immediately after resolving the effects of the power.
1. Phase of the Sun: At the start of your turn, each enemy adjacent to you takes fire and radiant damage equal to your Strength modifier. You also gain resist 5 cold.
2. Phase of the Moon: You gain a bonus to AC equal to the number of conscious enemies adjacent to you. You also gain resist 5 psychic.
3. Phase of the Stars: Whenever an enemy’s attack misses you, you can teleport a number of squares equal to your Strength modifier as a free action. You also gain resist 5 radiant.
The resistance granted by this class feature increases to 10 at 11th level and to 15 at 21st level. While you have resistance from this class feature, your arcane powers ignore all targets’ resistance to that damage type up to the value of your resistance.
