Tanarukk

By Gruumsh's hand, Baphomet's will, or some other means, your blood has been demonized, transforming you into a tanarukk. You gain the following benefits:

• Increase your Strength or Constitution score by 1, to a max 20.
• Your creature type is Humanoid and Fiend.
• You gain your choice of pointed spines or horns and grow by 3d4+4 inches, none of which impact your stats.
• You gain resistance to either fire or poison damage.
• At the start of your turn, you can go into a rampage (no action required) for a minute, until you're incapacitated, or until you end your turn without moving at least half your movement speed in a line towards a hostile creature. While rampaging, you can make a melee attack any time a creature makes an opportunity attack against you.
  • You can't do so once you enter a rampage until you finish a long rest.