Become Blizzard

When you invoke your Crimson Rite(Rite of the Frozen), you may suffer an addition 1d4 rite damage to transform your skin into a tempered icy shell. You gain resistance to cold damage, add +3 to your AC, and any cold damage you take gives you Become Blizzard*. At the end of your next turn, the frozen armor explodes, revealing your original form and removing these benefits. You may use this feat once per long rest.

*Become Blizzard - Add an additional +3 to your AC. At the end of your next turn, your frozen armor explodes- and all creatures within 10 feet of you must make a Dexterity Saving Throw against your Strength Score.