When determining your ability scores, you increase one of those scores by 2 and increase a different score by 1, or you increase three different scores by 1. You follow this rule regardless of the method you use to determine the scores, such as rolling or point buy.

Cats have an average of 3 STR. Due to how the character builder is set up, it isn't possible to set your STR to 3. Instead, your STR score will have a -5. This will not be a problem if your campaign uses point-buy or the standard array (by assigning 8 to STR) but can be problematic if you have different systems for creating your character's ability scores.

You were mature by the time you were two years old. If they remain healthy, a cat may live up to up to twenty, even thirty, years. However, you are a talking cat who can move things with your mind. Who knows how long you'll actually live?

Your size is tiny. Again, this cannot be stressed enough, you are a cat.

Your base walking speed is 40 feet. You also have a climbing speed of 30 feet.

You have Darkvision and can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

You are proficient with the Perception skill. You have advantage on Perception checks that rely on hearing and smell.

You cannot be surprised and roll with advantage to wake up.

You are proficient in Stealth and Acrobatics and have advantage when making Acrobatic checks.

You can use your reaction when you fall to reduce any falling damage you take by an amount equal to ten times your Proficiency bonus.

You do not require a 10' running start to leap their maximum distance.

Due to your size, you can move through the space of any creature that is of a size larger than yours. Also due to your size, speed, and agility, you are also harder to hit. Your base Armor Class is 12 instead of 10.

You can take the Disengage or Hide action as a bonus action on each of your turns.

Your claws are natural weapons that you can use for unarmed strikes that deal 1 point of slashing damage.

You can somehow move things with your mind. Somehow, this isn't as weird as your ability to talk. You can move things with your mind as well as other people use their hands. Your Strength is set at 3 regardless of what is on your character sheet. You choose whether your telekinesis is based on your Intelligence, Wisdom, or Charisma.

Your telekinesis functions a bit like the cantrip mage hand except you can make it invisible and may be able to manipulate things that need two hands. If you are a spell caster, the spectral hands of the cantrip perform the somatic components, and somehow, the spell works.

Your lifting strength is not limited to 10 pounds. Your lifting weight is based on the ability score your telekinesis is paired with. Please note that your carrying weight is that of a cat with a Strength of 3. However, you can move objects and creatures with your mind as if your Strength is equal to the ability score this power is paired with.

As a bonus action, you can try to telekinetically shove one creature you can see within 30 feet of you. When you do so, the target must succeed on a Strength saving throw (DC 8 + your proficiency bonus + the ability modifier of the score increased by this feat) or be moved 5 feet toward you or away from you. A creature can willingly fail this save.

You speak Common.