Elemental Tides

You release a burst of chaotic, elemental magic waves that originate from you in a 120 feet sphere. Until the spell ends, ground in the area is difficult terrain and at the end of each of your turns, a wave of elemental energy pulses through the area; targeting each creature in the area with a magical effect. You can choose a number of creatures equal to your Spellcasting Ability Modifier to be unaffected by magic. The effects are different each round:

• Round 1. Make a ranged spell attack against all targets. On a hit, the target takes 15d12 Cold damage and is Restrained until their next round.
• Round 2. Make a ranged spell attack against all targets. On a hit, the target takes 15d12 Fire damage.
• Round 3. Make a ranged spell attack against all targets. On a hit, the target takes 15d12 Lightning damage and is Paralyzed until their next round.
• Round 4. Make a ranged spell attack against all targets. On a hit, the target takes 15d12 Poison damage and is Poisoned until their next round.
• Round 5. Make a ranged spell attack against all targets. On a hit, the target takes 15d12 Acid damage.