Conviction

Through your conviction of belief, you heal yourself by 1d4+4 and your maximum hitpoint total increases by the the same amount. The temporary maximum hitpoint increase lasts for one hour. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you gain 1d4 +2 additional healing for each slot level above 1st. This also increases your maximum by the same amount.