As an Archangel you have Darkvision with a range of 120 feet, as well as a blind sight of 10 ft.

You have Resistance to Necrotic and Radiant damage, in addition to that, you have Advantage on saving throws you make to avoid or end the Poisoned condition.

Starting at 5th level, you can unleash a revelation of your divine nature as a bonus action. Choose one option each time you activate this feature. Some last for a duration, others are instantaneous. You can use this feature a number of times equal to half your Constitution modifier (rounded up), you regain all expended uses when you finish a long rest. You gain additional revelations at 8th level. Cannot take the Telekinetic feat due to a revelation granted at 8th level. Only one revelation can be used at a time.

Here are the transformation options you gain at level 5:

• Heavenly Wings. Spectral wings sprout from your back for 10 minutes, giving you a fly speed equal to your walking speed.
• Inner Radiance. For 1 minute, your eyes blaze with light and spectral wings cast shadows behind you. You shed bright light in a 15-foot radius and dim light for 15 more feet. Enemies within 10 feet must make a Wisdom saving throw (DC 9 plus your Constitution modifier and Proficiency Bonus) or become frightened until the end of your next turn.
• Healing Hands. You touch a creature and roll a number of d6s equal to your Proficiency Bonus. The creature regains a number of Hit Points equal to the total rolled. You can use this a number of times equal to your constitution modifier, regaining all expended uses on a Long Rest.

Here are the revelations you gain at level 8:

• Celestial Tremor. The ground tremors strongly for 1 minute. The ground in a 30 ft radius around you becomes difficult terrain and creatures standing within 30 ft of you must succeed a Strength saving throw (DC 9 plus your Constitution modifier and Proficiency Bonus) or be knocked prone.
• Greater Telekinesis. You can telekinetically shove one creature you can see within 30 feet of yourself. When you do so, the target must succeed on a Strength saving throw (DC 9 plus your Constitution modifier and Proficiency Bonus) or be moved 10 feet toward or away from you.
• Celestial Smite. You grab a creature within range as a surge of radiant energy surges through their body, causing their eyes to emit bright light. The creature must succeed a Constitution saving throw (DC 9 plus your Constitution modifier and Proficiency Bonus), taking 4d6 radiant damage on a failed save and half as much on a successful one.