Death gamble

You make a spherical barrier in which neither you nor your opponents can exit. Once activated you must roll 3d20 and roll above an 18 on all of them to proceed. Managing to roll above an 18 on all 3d20 indicates a jackpot, which you then you enter a state in which the following effect take place:

- You become a speaker and a song of your choice (must be less than 5 mins) plays from your body.

You also get to choose 2 of the 3 effects shown bellow as additional effects:

- You gain the ability to regain up to 5 used spell slots for the duration of the spell.

- You gain the ability to automatically heal 1d5 each turn.

- You get to add 1d5 to all your strength and defence checks for the duration of the spell.

The caster also takes unblockable dmg equal to 1d5 each turn.

The spherical barrier disappears either when you hit a jackpot or fail to do so.

The spells duration is equal to the duration of the song being played, when the song ends or the caster ends the spell the spell ends and all stats go back to normal.