[b]Carbombya: The Spider's Cave[/b]

[i]Yes, because he'd actually overlook his eyes while he makes the rest of his body invulnerable.[/i]

Rastun would have said that aloud, but this isn't time to be bantering. It's obvious that they need to think of something to deal with this arachnid. Brainwave is more than likely thinking up of another plan, but whatever his idea is, it would be useless without the time to implement it. So Rastun decides to give him time. He dashes away from the enemy to give himself yet more space between them, and when he stops, he deploys the Astafanel's ultimate weapon; the Existence Reversal Cannon. Its chest plate opens up, revealing its trump card. The ERC needed several seconds of charge time and to make it worse, the Astafanel has to be stationary as it gathers power and it's also unable to utilize its other time-related abilities. Very impractical for this situation, but the point is not hitting him with it. No, the point is to be the bait as he charges it up while Brainwave does whatever he's going to do. 

The Astafanel proceeds to divert massive amounts of temporal energy to the ERC, likely displaying a massive spike in power readings to the spider's sensors. This should undoubtedly attract his attention. Hopefully Megatron keeps him busy as this happens while Brainwave completes his plan in time, and maybe join Megatron while trying to implement his actual strategy. This needs to appear as genuine as possible.