This is the one big darn reason why our inbox says "You have 1000 gifts in your inbox" but in reality, you have 5000+ feeders in there.
I guess this is where we can finally talk about our enhancing tactics and maybe teach everyone else how this is super awesome.
When you buy feeders with luna, you can use it to max monster cards and the price go up. This is basically one of those time of how you turn luna into TE. Awesome!
We also have the Enhance bonus during recruitment events.
On my 2nd account, I have over 6-8k cards and I am too lazy to take them out. Every time there's panel, I barely have time to feed my cards on my main. For some weird reason, I'm always working every time there's and enhance bonus. O.O