Slam. Melee Attack Roll: Bonus equals your spell attack modifier, reach 5 ft. Hit:Force damage equal to (summonSpellLevel - 4)d4 + 3, (summonSpellLevel - 3)d6 + 3 + your spellcasting ability modifier (Large), or (summonSpellLevel - 3)d12 + 3 + your spellcasting ability modifier (Huge).