Blood Frenzy

Your pulse quickens, your muscles tense and grow, and you are instilled with the aspect of the hunt, turning into an apex predator. For the spell's duration, you gain the following benefits.

• If you are reduced to 0 hit points, you stay conscious until the spell ends
• You become one size larger
• When you make an attack against a creature with less than half it's hit point maximum, you make the rolls with advantage
• Your movement speed is increased by half your base movement speed
• Whenever you use an action to make an attack action with a melee weapon, you make 3 attacks instead of one. On hit, you deal an additional 1d6 of bludgeoning, slashing, or piercing damage (your choice)

When the spell ends, you gain one level of exhaustion and take 2d8 necrotic damage

(credit goes to Trash King on Tumblr)