Tigra has a superhuman strength , speed , senses and agility. With her retractable claws and limited mystical abilities she can fight her enemies with huge advantage. Just like a cat she has very fast movements and reflexes able to move really fast.She is more like a cat-person and easily transform back to its human form.She team ups with Spider-Man in several events.Source here
image sourceShe has been a member of the Avenger but left due to some dispute issues but still sometimes joined the Avengers on several missions.On the Civil War she fought along with Iron Man since she supported the Registration Act.Source here