Tomb of Ice

You touch one willing creature and incase them in solid ice. While inside this tomb you gain temp hits points equal to 5 times the level you cast the spell at. You do not breath but do not suffocate for the duration, you can see in the direction you were frozen in but not move your eyes, you cannot use any items, spells (Expect for message, telepathy, ect.) and objects. Your AC becomes 20 and the attacker has disadvantage on all attacks unless using fire. If the tomb is broken you become stunned but keep the effect you chose. You chose one of these effects.

Lose one stage of exhaustion 

Regain hit points equal to 5 times your level

Regain spell slots depending on what level the spell is casted on. Ex: If the spell if casted at 3rd level you gain three points to chose spell slots to regain. AKA: 3 level 1 Spell slots, 1 level 2 or 1 level 3