Planar Influence: Chaos, Limbo

Your time channeling cosmic forces has caused your body to be tuned to the energies of a single Outer Plane. Choose an Outer Plane that matches at least one alignment with your Scion of the Outer Planes feat. 
(These feats are based on Planar Influences found in Morte’s Planar Parade. As such, some have been edited to better match being used by PCs)

Creatures influenced by Limbo have their appearance shift at each dawn. Their skin might change color, or their features might morph into unnatural, even abstract, configurations. You  gain one or more of following traits of the DMs choice:

Chaotic Magic. You can cast the thaumaturgy cantrip, choosing a magical effect at random. Charisma is the spellcasting ability for this spell.

Churning Chaos. When you score a critical hit or takes  critical hit, chaotic energy bursts from you, creating one the following effects (choose one or roll a d6):

1–2: Melting Terrain. For 1 minute, the ground within 20 feet of you melts into a mud-like texture, becoming difficult terrain.

3–4: Miraculous Resilience. You gain temporary hit points equal to half the damage the critical hit dealt (rounded up).

5–6: Disrupted Gravity. Each creature within 20 feet of you must succeed on a DC 15 Constitution saving throw or rise vertically, up to 20 feet, and remain magically suspended there for 1 minute. While suspended in this way, a creature has the restrained condition.

Hidden Slaad (Recharges after a Long Rest). You are immune from a blue slaad's chaos phage and a red slaad's egg implantation. As an action, a slaad tadpole can burst from your body and appears in a space next to you. Your current and maximum Hit Points decrease by 20 (8d4) that cannot be reduced or prevented in any way. The tadpole has the following changes to its stat block:

• Its armor class increases from 12 to 18
• Its hit points are equal to the Hit Points lost summoning the slaad tadpole
• Its Bite attack has changes from +4 to hit and 4 (1d4 + 2) piercing damage to +8 to hit and 7 (2d4+2) piercing damage
• It is immune to the charmed condition. 

The slaad tadpole is an ally to you and your companions. In combat, the creature shares your initiative count, but it takes its turn immediately after yours. It obeys your verbal or mental commands (no action required by you). If you don’t issue any, it takes the Dodge action and uses its move to avoid danger. If you die, the slaad tadpole is automatically summoned and will immediately try to kill who ever killed you, friend or foe. It will then violently attack the closest target to it in sight. If you do not know who killed you, the slaad tadpole will target the closest creature in sight. If there are equal targets to it, it will prioritize targets that are closest in alignment to Lawful Neutral.
The slaad tadpole vanishes once it drops to 0 hit points or when you finish a long rest. After which your maximum hit points return to normal.

In addition, if you use any of these features and your alignment is not Chaotic Neutral, make a DC 5 Wisdom saving throw. On a failure, your alignment changes to Chaotic Neutral. A short or long rest or a dispel evil and good spell restores your original alignment.