Blast resort

during the first round of using this spell, become immune to all forms of force and pull everything within a 50ft radius of you towards you at a speed of 321 feet per second squared (ten times earths gravity), your turn then ends as you pass the point of no return, now the casting of this spell may not be stopped by any means, you cant stop it by changing your mind,  the magic cant be dispelled even if your moved into a dead magic zone or you drop to zero hp, then once your next turn begins, you unleash all of your magical energy and power as a massive sphere shaped explosion. the size and damage of the blast depends on your spell slots and hp, the base damage dealt by this blast is equal to 90 plus your max hp, plus any hp you have remaining at the point of casting this spell which is expended upon releasing the blast, if your hp is 0 or negative at the point of releasing the blast, all the damage over zero is subtracted from the base damage, the same goes for the base radius of the attack, except multiplied fivefold. Then for each unexpended level one spell slot you have, increase the damage of the blast by 10 and the radius of the blast by 50, unexpended level 2 slots increase them by 20 damage and 100 feet, level 3 slots increase it by 30 and 150, and so on. for each expended spell slot you have, increase the damage and radius by half as much as an expended spell slot of the same level. Do not account for the spell slot used to cast this spell in calculating the damage and radius of the blast, for it was already accounted for in the base damage.  Everything within the radius of the blast takes damage equal to the total damage calculated prior, regardless of whatever defenses or abilities they have. after the blast has subsided, your body will be left where it was when you used the blast, completely unconscious and once again under the influence of forces such as gravity, then each turn for the next 6 turns you must roll a death saving throw, if all 6 saving throws suceed, you become stable at one hitpoint, but if even one saving throw fails, you die. Even if you do survive unleashing so much raw magic at once, you will never be able to use any form of magic again and you will always be at exhaustion level 5, for the rest of your life no matter what.