Ultimate Tirek

I know that Tirek is like the most badass and the ultimate evil of the MLP universe (Thanks, Courageous-of-Light ) but he can become more badass than just that.

If the mane six has a Super Saiyan-like Rainbow Power, then Tirek must have some sort like a Legendary Super Saiyan just like Broly has. I can compare Tirek closest to Broly. In this "Ultimate Tirek" form, he is at his most powerful, becoming an all-omnipotent god that almost nothing can stop him.

Powers:

• Shapeshifting - To evolve into this form, Tirek must consume an entirety of all the magic existed in the world, allowing him to grow to his size half as large as the entire Equestrian continent. With this form, he can become almost as large as an entire planet. But when he absorbed energies from celestial bodies, he can grow to his largest possible humongous size where he can be able to fit the whole planet in the mere palm of his hand.
• Complete Invulnerability - Tirek is completely immune to mortal harm and cannot be harmed by anything. Even a powerful god's great powers show no effect to Tirek's defenses and cannot lay a scratch on his skin.
• Extreme Magic Drain - In this form, he now harness the power to drain the magic and powers of all creatures (ponies, dragons, griffons, buffaloes, mythological creatures, etc.) in the world in just one time. Tirek can also be able to steal the cosmic energies from celestial bodies including the sun, moon and stars with ease, giving him unlimited power beyond unknown imagination.
• Total Strength - At high levels of power, Tirek displays an exaggerating degree of super strength. His punches are powerful enough to shake a planetary body or create a huge scar on the planet.
• Immense Demonic Magic - Tirek possesses the strongest demonic powers that has ever existed in history. Aside from his only rival and weakness, the Rainbow of Light, in this Ultimate form, he is a billion times more powerful than all other supernatural beings and entities in all areas put together with all the powers and magic in the world combined.
• Absolute Omnipotence - With enough magic consumed to reach this stage, Tirek becomes completely unstoppable. Not even Alicorn X seemed to be a match for him.
• Unlimited Stamina - Tirek is not subject to fatigue and can quickly exert himself at full capacity forever. He can breathe even in zero atmosphere (outer space).
• Infinite Durability - Tirek is flawlessly indestructible and is capable of withstanding powerful godly blows and colossal amounts of pain for a few time without showing any signs of pain or exhaustion at all.