Level 3
Hearts Fuel.
+5 max HP. Upgrade your Hit Dice to d10s.
Origami Familiar.
(KEY/ Safe Rest) as an action you may summon a small paper familiar in a form of your choosing. It has 18 HP, is flammable, has a speed of 6 and may move and take the Help action once for free on each of your turns.
Flammable: An attack dealing fire damage automatically crits against the familiar.
Level 7
Vicious Familiar.
Your familiar may now be medium sized and has 58 HP, and the ability to use the Paper Cut attack (1d8 + KEY) OR the Help action each turn.
Level 11
Flame Dancer.
You may spend 2 additional mana remove the flammable condition from any spell as you cast it.
Flying Familiar.
Your familiar may now be large sized it has 98 HP, a fly speed equal to its walking speed and may carry 1 willing creature medium or smaller.
Level 15
Massive Familiar.
Your familiar may be huge sized, has 138 HP, gains + 2 to its fly speed and may carry KEY creatures large or smaller. It also gains the ability to cast the Razor Page cantrip in place of the help action.