You gain +1 to your dexterity or wisdom modifier
You and your familiar have grown an unbreakable bond that has reaped many benefits.
Connection of Mind: You can now read and talk to the familiar with your mind no matter how far you are from them and it does not take a bonus action in battle.
Connection of Health: Your familiar gains 1/2 of your hitpoints as their own, rounding up if needed. They also gain 1/4 of your Ac.
Connection of Power: Your familiar now can do 1d6+1 damage to an enemy with a plus 5 on hit to any enemy with 30 feet of it. This gives an attack of opportunity to the enemy but with a minus 3 on the roll given the tiny or flying aspect of your companion.
Connection of Life: When you die, your familiar dies along with you as it is with profound grief. When it dies, it turns to ash and may be revived at a hefty cost. However, you may choose a new animal Companion by finding one.