Cry For Assistance

You summon assistance when you need it most. If you are at or lower than 10hp (1D20), you can summon an ally from your imagination. The ally can look however you want to look, and have any kind of personality, as long as the personality doesn't contradict their helpful demeanor. The ally has attacks determined by the shape of the creature, and has 120 (2D100) HP, and 1D20 Temporary HP. When you cast this spell, you drop to 0 HP but are stable. The ally is friendly to you and your party, and is hostile to any creature that has done damage to anybody in the party. When the ally attacks, they first attack the creature who dealt the blow that put you under (1D20) HP, or the creature who attacked most recently.