Kaiju Form

Luminescent Body. Your body emits bright light in a 40ft radius and dim light for 40ft more.

Siege Monster. You deal double damage to objects and structures.

Eldritch Power. Use your Warlock Spell Attack Bonus for your attack rolls while in this form, and your Warlock Spell Save DC for your base armor class.

Multiattack. You make 2 Slam attacks, one of which can be replaced by the Bite Attack

BIte. Melee Weapon Attack: +spell attack bonus to hit, reach 5 ft., 1 target. Hit: 21 (3d6 + 6 + PB) [piercing] damage. The target is grappled(escape DC 19). A creature grappled in this way suffers your bite damage at the start of your turn.

Slam. Melee Weapon Attack: +spell attack bonus to hit, reach 10 ft., 1 target. Hit: 24 (3d8 + 6 + PB) [bludgeoning] damage. A creature that suffers this damage must succeed a Dexterity saving throw against your Warlock spell save DC or fall prone.

Kaiju Beam.  As an action, you can release a concentrated beam of destruction. Targets in a 60ft long, 5ft wide line originating from you take 22(4d10) force damage +radiant damage equal to half the remaining hp of this form, Dex save for half. Your transformation ends immediately.