Blast to the past

The caster chooses a target(s) that is in sight to be sent back to the past ( the time they are sent back is based on 2d100 rolls. The caster can choose whether it's hours days or years they get sent back. The creatures from the past will only be hostile if the target(s) do something to provoke them. At higher levels this spell can harm the target or choose to send multiple people back in time. Level 4 is either 1d6 damage or 2 targets. Level 8 is 2d6 or 3 targets. Level 14 is 4d10 or 4 targets. Level 17 is 3d20 or 6 targets. The caster cannot damage the targets if they choose to send more than one back. When the caster decides to have the target take damage the target will take Radiant damage for whatever the caster rolls. If the spell misses then the caster will become frozen in place for a turn. It requires a Cha saving throw of 16 to fail, a 14 passes and the target will take half damage and become disoriented and below a 14 is a fail.