Arcane Shield

You bring up a one way shield, that covers a 20 by 15 ft space in front you, while holding this up you cannot make attacks and movement is lessened by 40 to a minimum of 5. Anyone behind you can shoot through the shield, anyone in front cannot, the shield has 10d12 hp and is affected by spells that heal or damage, the sheild is only affected by damage or healing. Once the shield is broken you must take a long rest to get it back. The hp resets at the end of combat unless broken