About this whole Homura and corruption discussion, the main question is how can she survive so long, right?
Reading between the lines for episode 10, In the 2nd timeline, she's just using her powers a bit, and probably isn't consuming Grief Seeds very fast. The episode shows the end of the 3rd time line, where her tainted Soul Gem was purified by a Gried Seed that Madoka had stashed.
In the 4th timeline, since Homura has defeated EVERY witch, she could very possibly have a reserve stash of Grief Seeds, especially as she's mastered the use of her powers and uses mundane weapons (that are presumably very cheap to use).
There's a couple of things that aren't quite covered by her time stop power: that during the Walpurgis Night fight in the 4th episode, we see Homura protect herself with an energy shield emitted from her buckler, and in the beginning of the 5th (current) timeline we see her shooting energy bolts at Kyubey. Another example is Homura healing her eyes--improving her body instead of 'merely' repairing damage. This all implies that Puella Magi can grow their skill set.
Reading between the lines for episode 10, In the 2nd timeline, she's just using her powers a bit, and probably isn't consuming Grief Seeds very fast. The episode shows the end of the 3rd time line, where her tainted Soul Gem was purified by a Gried Seed that Madoka had stashed.
In the 4th timeline, since Homura has defeated EVERY witch, she could very possibly have a reserve stash of Grief Seeds, especially as she's mastered the use of her powers and uses mundane weapons (that are presumably very cheap to use).
There's a couple of things that aren't quite covered by her time stop power: that during the Walpurgis Night fight in the 4th episode, we see Homura protect herself with an energy shield emitted from her buckler, and in the beginning of the 5th (current) timeline we see her shooting energy bolts at Kyubey. Another example is Homura healing her eyes--improving her body instead of 'merely' repairing damage. This all implies that Puella Magi can grow their skill set.