Sorcerer Master

Your long hours of training in the mystic arts has made you a Master Sorcerer. You gain the following benefits:

• Once per turn, you can reduce the sorcery point cost of one of your Metamagic options or Sorcerer features by up to two points. You can use this feature a number of times equal to your charisma modifer and regain the use of this ability when you finish a long rest.
• As an action, you can spend 1 to 8 sorcery points to have your AC become 10 + your charisma modifier + your constitution modifier for a number of hours equal to the amount of sorcery points you expended.
• When you finish a short rest you regain half your expended sorcery points. Once you gain your sorcerous restoration feature you instead regain all your sorcery points when you finish a short rest.