Ramone the unstoppable force 2

Ramone becomes an unmovable and unstoppable force. You gain the following benefits:

• Increase your Constitution and strength score by 2 to a maximum of 22
• Ramone's size becomes large he gains an extra foot of height
• When you would drop to 0 hp, you instead regain hit points; the minimum number of hit points you regain is equal to twice your Constitution modifier + a d12. You can do this up to once per long rest. When Ramonee would make an unarmed atk, he can also, as a free action, attempt to grapple a creature within the same action.
• When Ramone takes this feat doubles his current HP, and he gets a d12 hit point dice added to each of his levels.
• When Ramone takes the Dash action, any creature within 5 feet of where he dashes must make a Dex save of 18 or higher. On a failure, they take 4d10 force damage and become knocked prone. On a success, they instead take half damage. He can only do this once per long rest
•  If Ramone fails a Str or Con check, he can instead choose to succeed once per long rest 
•  Ramone increases his AC by his con modifier, and becomes immune to force damage