Tenser's Transformation

Wizard

Level 6 Transmutation

Casting Time: 1 action
Range: Self
Components: V, S, M (a few hairs from a bull)
Duration: Concentration, up to 10 minutes

You endow yourself with endurance and martial prowess fueled by magic. Until the spell ends, you can't cast spells, and you gain the following benefits:

• You gain 50 temporary hit points. If any of these remain when the spell ends, they are lost.
• You have advantage on attack rolls that you make with simple and martial weapons.
• When you hit a target with a weapon attack, that target takes an extra 2d12 force damage.
• You have proficiency with all armor, shields, simple weapons, and martial weapons.
• You have proficiency in Strength and Constitution saving throws.
• You can attack twice, instead of once, when you take the Attack action on your turn. You ignore this benefit if you already have a feature, like Extra Attack, that gives you extra attacks.

Immediately after the spell ends, you must succeed on a DC 15 Constitution saving throw or suffer one level of exhaustion.

Source: Xanathar's Guide to Everything, p. 168